user: Question: What is the time (GMT) for the 12A Serial?
Columns: ['Date', 'Time ( GMT )', 'Serial', 'Apogee', 'Outcome']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1957-06-11', '19:37', '4A', 'kilometres (mi)', 'Failure']
SQL:

assistant: SELECT "Time ( GMT )" FROM "Table" WHERE "Serial" = '12A';