user: Question: What is the lowest Round with the Location, Las Vegas, Nevada, the Method, Decision (unanimous), and the Event, K-1 World Grand Prix 2003 in Las Vegas II?
Columns: ['Result', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Win', '17–0', 'Brian Ebersole', 'Decision (unanimous)', 'Strikeforce', 5.0, 'San Jose, California']
SQL:

assistant: SELECT MIN("Round") FROM "Table" WHERE "Location" = 'Las Vegas, Nevada' AND "Method" = 'Decision (unanimous)' AND "Event" = 'K-1 World Grand Prix 2003 in Las Vegas II';