user: Question: What date did the West Indies win the match?
Columns: ['S No', 'Team (A)', 'Team (B)', 'Winner', 'Margin', 'Match Date']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'India', 'Pakistan', 'Pakistan', '2 wickets', '18 Feb 1987']
SQL:

assistant: SELECT "Match Date" FROM "Table" WHERE "Winner" = 'West Indies';