user: Question: What was the earliest year for the Ligier Gitanes?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1987.0, 'Enzo Coloni Racing Car Systems', 'Coloni FC-187', 'Ford DFZ 3.5L V8', 0.0]
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "Entrant" = 'Ligier Gitanes';