user: Question: what was the title of the episode 21a?
Columns: ['Episode #', 'Season #', 'Title', 'Writer(s)', 'Director', 'Originalairdate']
Types: ['text', 'real', 'text', 'text', 'text', 'text']
Sample row: ['14', 2.0, '"Mutation City"', 'Glenn Leopold', 'Robert Alvarez', 'September10,1994']
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Episode #" = '21a';