user: Question: What was the average number of rounds in the fight where Tank Abbott lost?
Columns: ['Weight Division', 'Winner', 'Loser', 'Method', 'Round', 'Time']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Heavyweight', 'Kimbo Slice', 'Tank Abbott', 'KO (Punch)', 1.0, '0:43']
SQL:

assistant: SELECT AVG("Round") FROM "Table" WHERE "Loser" = 'Tank Abbott';