Question: When has argentina won the fifa world cup?
Disambiguated questions and answers: question: When did Argentina win its first FIFA World Cup?
When did Argentina win its second FIFA World Cup?
answer: Argentina 78
1978
1978 FIFA World Cup
1978 FIFA World Cup Final
Copa Mundial de Fútbol Argentina '78
25 June 1978
1986 FIFA World Cup
Copa Mundial de Fútbol México '86
1986
29 June 1986
13th FIFA World Cup
1986 FIFA World Cup Final
Mexico '86
Natural Questions answer: 1978 (from the Wikipedia article "Argentina at the FIFA World Cup")