user: Question: What is the total number of Weight(s), when Block is 300?
Columns: ['Name', 'Date of Birth', 'Height', 'Weight', 'Spike', 'Block']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Marcos Milinkovic', '22.12.1971', 205.0, 100.0, 355.0, 338.0]
SQL:

assistant: SELECT COUNT("Weight") FROM "Table" WHERE "Block" = 300.0;