athletics at the 2007 Pan American Games – women's 400 metres
{'<entity_0>': 'athletics at the 2007 Pan American Games', '<entity_1>': "athletics at the 2007 Pan American Games – women's 400 metres"}
[["athletics at the 2007 Pan American Games – women's 400 metres", 'part of', 'athletics at the 2007 Pan American Games']]
The <entity_1> event at the <entity_0> was held on July 23–25.
['sporting event']