user: ### NOW ANSWER:
Question: What is Date, when Comment is Tailcone on, lakebed landing, and when Duration is 5min 34 s?
Columns: ['Test flight', 'Date', 'Speed', 'Altitude', 'Crew', 'Duration', 'Comment']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Taxi test #1', 'February 15, 1977', 'mph (km/h)', 'taxi', 'none', 'taxi', 'Concrete runway, tailcone on']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Comment" = 'Tailcone on, lakebed landing' AND "Duration" = '5min 34 s';