2007 World Championships in Athletics – men's 400 metres
{'<entity_0>': '2007 World Championships in Athletics', '<entity_1>': "2007 World Championships in Athletics – men's 400 metres"}
[["2007 World Championships in Athletics – men's 400 metres", 'part of', '2007 World Championships in Athletics']]
The <entity_1> at the <entity_0> was held at the Nagai Stadium on 28, 29 August and 31 August.
['sporting event']