user: ### NOW ANSWER:
Question: How many yards for the player with 20 solo tackles and under 0 TDs?
Columns: ['Player', 'Tackles', 'Solo', 'Assisted', 'Sack', 'Yards', "TD's"]
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['William Cotman', 26.5, 24.0, 5.0, 0.0, 10.0, 0.0]
SQL:

assistant: SELECT SUM("Yards") FROM "Table" WHERE "Solo" = 20.0 AND "TD's" < 0.0;