2006 Riga summit
{'<entity_0>': '2006 Riga summit', '<entity_1>': '29 November 2006', '<entity_2>': 'NATO summit', '<entity_3>': 'Riga'}
[['2006 Riga summit', 'location', 'Riga'], ['2006 Riga summit', 'end time', '29 November 2006'], ['2006 Riga summit', 'instance of', 'NATO summit']]
The <entity_0> or the 19th NATO Summit was a <entity_2> held in the Olympic Sports Centre, <entity_3>, Latvia from 28 to <entity_1>. The <entity_3> summit was the first <entity_2> which underscored the need for energy security, following the Russia-Ukraine gas dispute.
['NATO summit']