user: Question: What is the average last yr with an l plyf less than 0?
Columns: ['Coach', 'First Yr', 'Last Yr', 'W-L%', 'G > .500', 'Yr plyf', 'G plyf', 'W plyf', 'L plyf']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Faye Abbott', 1928.0, 1929.0, 0.0, 13.0, 0.0, 0.0, 0.0, 0.0]
SQL:

assistant: SELECT AVG("Last Yr") FROM "Table" WHERE "L plyf" < 0.0;