user: Question: What is the record that resulted in a Loss at the RSF: Shooto Challenge 2?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Loss', '19-12', 'Duane Ludwig', 'TKO (strikes)', 'Strikeforce: Payback', '1']
SQL:

assistant: SELECT "Record" FROM "Table" WHERE "Res." = 'Loss' AND "Event" = 'RSF: Shooto Challenge 2';