user: Question: What is Time, when Round is less than 2, and when Opponent is "Valentijn Overeem"?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Win', '12-15', 'Shane DeZee', 'Submission (strikes)', 'Throwdown at the Crowne', 2.0, '1:42', 'St. Paul, Minnesota , United States']
SQL:

assistant: SELECT "Time" FROM "Table" WHERE "Round" < 2.0 AND "Opponent" = 'Valentijn Overeem';