user: Question: What is the total PI GP of the player with a pick number 49 and a reg gp less than 0?
Columns: ['Rd #', 'Pick #', 'Player', 'Team (League)', 'Reg GP', 'Pl GP']
Types: ['real', 'real', 'text', 'text', 'real', 'real']
Sample row: [2.0, 49.0, 'Kirill Koltsov', 'Avangard Omsk ( Rus )', 0.0, 0.0]
SQL:

assistant: SELECT SUM("Pl GP") FROM "Table" WHERE "Pick #" = 49.0 AND "Reg GP" < 0.0;