2009 World Championships in Athletics – men's 4 × 400 metres relay
{'<entity_0>': '2009 World Championships in Athletics', '<entity_1>': "2009 World Championships in Athletics – men's 4 × 400 metres relay"}
[["2009 World Championships in Athletics – men's 4 × 400 metres relay", 'part of', '2009 World Championships in Athletics']]
The <entity_1> at the <entity_0> was held at the Olympic Stadium on August 22 and August 23.
['sporting event']