user: Question: Which spacecraft were launched by the Titan II?
Columns: ['Spaceport', 'Launch complex', 'Launcher', 'Spacecraft', 'Flights', 'Years']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Baikonur Cosmodrome , Kazakhstan', 'Site 1', 'Vostok (r)', 'Vostok 1–6', '6 Orbital', '1961–1963']
SQL:

assistant: SELECT "Spacecraft" FROM "Table" WHERE "Launcher" = 'Titan II';