swimming at the 1973 World Aquatics Championships – men's 100 metre butterfly
{'<entity_0>': "swimming at the 1973 World Aquatics Championships – men's 100 metre butterfly", '<entity_1>': 'swimming', '<entity_2>': '1973'}
[["swimming at the 1973 World Aquatics Championships – men's 100 metre butterfly", 'point in time', '1973'], ["swimming at the 1973 World Aquatics Championships – men's 100 metre butterfly", 'sport', 'swimming']]
The <entity_0> competition of the <entity_1> events at the <entity_2> World Aquatics Championships took place on September 8.
['sporting event']