athletics at the 1999 Pan American Games – women's 400 metres hurdles
{'<entity_0>': "athletics at the 1999 Pan American Games – women's 400 metres hurdles", '<entity_1>': 'athletics at the 1999 Pan American Games'}
[["athletics at the 1999 Pan American Games – women's 400 metres hurdles", 'part of', 'athletics at the 1999 Pan American Games']]
The <entity_0> event at the <entity_1> was held July 27–28.
['sporting event']