user: Question: Who won Men's singles the year that Hilde Themel won Women's singles?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1963', 'Bernd Frohnwieser', 'Hilde Themel', 'Bernd Frohnwieser Harald Pirsch', 'Mariča Amf Meta Bogel', 'Bernd Frohnwieser Hilde Themel']
SQL:

assistant: SELECT "Men's singles" FROM "Table" WHERE "Women's singles" = 'Hilde Themel';