Mexico at the 1999 Pan American Games
{'<entity_0>': 'Mexico at the 1999 Pan American Games', '<entity_1>': '1999'}
[['Mexico at the 1999 Pan American Games', 'point in time', '1999']]
The <entity_0> were held in Mar del Plata, Argentina from July 23-<entity_1>.
['nation at sport competition']