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Emil Eifrem, CEO and founder, of neo4j is photographed at his headquarters in downtown San Mateo, Calif., on Monday, Feb. 27, 2017. Neo4j is a startup...

Brazilian singer Ivete Sangalo (C) performs with the Grande Rio samba school during the first night of Rio's Carnival at the Sambadrome in Rio de Jane...

Revellers of the Grande Rio samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, early on Februa...

A reveller of the Imperatriz Leopoldinense samba school performs during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil,...

Revellers of the Imperatriz Leopoldinense samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, e...

Revellers of the Imperatriz Leopoldinense samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, e...

Revellers of the Imperatriz Leopoldinense samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, e...

The leader of the Kayapo indigenous people Raoni Metuktire (2-R), Megaron Txucarramae (R) and other indigenous leaders parade with the Imperatriz Leop...

Brazilian actress Viviane Araujo performs with the Academicos do Salgueiro samba school during the first night of Rio's Carnival at the Sambadrome in...

A reveller of the Academicos do Salgueiro samba school performs during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil,...

A reveller of the Academicos do Salgueiro samba school performs during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil,...

Revellers of the Academicos do Salgueiro samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, ea...

A reveller of the Unidos de Vila Isabel samba school performs during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, ea...

Revellers of the Unidos de Vila Isabel samba school perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, earl...

A reveller of Beija-Flor performs during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, early on February 27, 2017. /...

Revellers of Beija-Flor perform during the first night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, early on February 27, 2017. / AF...

French far-right Front National (FN) party candidate for the presidential election Marine Le Pen (C) waves as photographers surround her during a visi...

Iraqi families flee Mosul's Jawasaq neighbourhood on February 27, 2017, during an offensive by Iraqi forces to retake the area from Islamic State (IS)...

Iraqi forces advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an offensive to retake the area from Islamic State (IS) group...

A member of the Iraqi forces sits in an armoured vehicle as troops advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an offen...

Iraqi forces advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an offensive to retake the area from Islamic State (IS) group...

A member of the Iraqi forces walks past a destroyed building as troops advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an o...

EDITORS NOTE: Graphic content / Iraqi forces stand next to the body of an alleged Islamic State (IS) group fighter as they advance through Mosul's Jaw...

EDITORS NOTE: Graphic content / Iraqi forces stand next to the body of an alleged Islamic State (IS) group fighter as they advance through Mosul's Jaw...

A member of the Iraqi forces walks past a destroyed building as troops advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an o...

A carnival float depicting a dog reading 'Polish government' takes part in the traditional 'Rose Monday' carnival parade in Duesseldorf, western Germa...

A member of the Iraqi forces aims his weapon as troops advance through Mosul's Jawasaq neighbourhood on February 27, 2017, during an offensive to reta...

Members of the Iraqi army's 9th Division fire a multiple rocket launcher from a hill in Talul al-Atshana, on the southwestern outskirts of Mosul, on F...

Members of the Iraqi army's 9th Division fire a multiple rocket launcher from a hill in Talul al-Atshana, on the southwestern outskirts of Mosul, on F...

A reveller of the Uniao da Ilha do Governador samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Bra...

A reveller of the Uniao da Ilha do Governador samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Bra...

A reveller of the Uniao da Ilha do Governador samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Bra...

A reveller of the Uniao da Ilha do Governador samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Bra...

A reveller of the Sao Clemente samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, on Februar...

A reveller of the Sao Clemente samba school performs during the second night of Rio's Carnival at the Sambadrome in Rio de Janeiro, Brazil, on Februar...

Former Russian Prime Minister, and one of opposition leaders, Mikhail Kasyanov, wipes a paint of his face after he was attacked, during a march in mem...

Attendances use their phones to take images of the new G6 unveiled by LG as its next phone, ahead of Monday's opening of the Mobile World Congress wir...

Russian opposition activist Ilya Yashin holds a loudspeaker during a march in memory of opposition leader Boris Nemtsov, in Moscow, Russia, Sunday, Fe...

People hold posters reading 'Who ordered the murder?' during a rally in memory of opposition leader Boris Nemtsov in St. Petersburg, Russia, Sunday, F...

A woman lays flowers at a portrait of Russian opposition leader Boris Nemtsov at the place where he was gunned down, in Moscow, Russia, Sunday, Feb. 2...

A woman lays flowers at a portrait of Russian opposition leader Boris Nemtsov at the place where he was gunned down, in Moscow, Russia, Sunday, Feb. 2...

People lay flowers at a portrait of Russian opposition leader Boris Nemtsov at the place where he was gunned down, with the Kremlin Wall in the backgr...

French Far-right leader presidential candidate Marine Le Pen gestures as she speaks during a conference in Nantes, western France, Sunday, Feb. 26, 20...

French Far-right leader presidential candidate Marine Le Pen gestures as she speaks during a conference in Nantes, western France, Sunday, Feb. 26, 20...

Arto Nummela, Chief Executive Officer at HMD Global, shows the new re-launched Nokia 3310 phone, ahead of Monday's opening of the Mobile World Congres...

Arto Nummela, Chief Executive Officer at HMD Global, shows the new re-launched Nokia 3310 phone, ahead of Monday's opening of the Mobile World Congres...

Arto Nummela, Chief Executive Officer at HMD Global, shows the new re-launched Nokia 3310 phone, ahead of Monday's opening of the Mobile World Congres...

Attendants check the new re-launched Nokia 3310 phone, during a Nokia presentation ahead of Monday's opening of the Mobile World Congress wireless sho...

Egyptian Christian Ezzat Yaacoub Ishak, who fled el-Arish in northern Sinai two days ago due to fighting, sits in his newly rented apartment, in Ismai...

In this Feb. 26, 2017 photo, two U.S. Coast Guard fast boats carrying suspects detained in prior drug interdiction operations are transferred from the...