athletics at the 1991 Pan American Games – men's 20 kilometres walk
{'<entity_0>': "athletics at the 1991 Pan American Games – men's 20 kilometres walk", '<entity_1>': 'athletics at the 1991 Pan American Games'}
[["athletics at the 1991 Pan American Games – men's 20 kilometres walk", 'part of', 'athletics at the 1991 Pan American Games']]
The <entity_0> event at the <entity_1> was held in Havana, Cuba on 4 August.
['sporting event']