user: Question: Name the winners of the mens doubles in the season of 1963/64.
Columns: ['Season', 'Mens Singles', 'Womens Singles', 'Mens Doubles', 'Womens Doubles', 'Mixed Doubles']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1994/95', 'Damien Eloi', 'Bettine Vrieskoop', 'Damien Eloi Christophe Legout', 'Åsa Svensson Marie Svensson', 'n/a']
SQL:

assistant: SELECT "Mens Doubles" FROM "Table" WHERE "Season" = '1963/64';