2003–04 LEN Euroleague
{'<entity_0>': '2003–04 LEN Euroleague', '<entity_1>': 'water polo'}
[['2003–04 LEN Euroleague', 'sport', 'water polo']]
The <entity_0> is the 41st edition of LEN's premier competition for men's <entity_1> clubs.
['sports season']