water polo at the 2011 World Aquatics Championships
{'<entity_0>': 'water polo at the 2011 World Aquatics Championships', '<entity_1>': 'water polo', '<entity_2>': 'Shanghai'}
[['water polo at the 2011 World Aquatics Championships', 'sport', 'water polo'], ['water polo at the 2011 World Aquatics Championships', 'location', 'Shanghai']]
The <entity_1> portion of the <entity_0> was held between July 17–30 at the <entity_2> Oriental Sports Center in <entity_2>, China.
['sports season']