user: Question: How many goals for kenton have a transfer window of summer?
Columns: ['Name', 'Country', 'Type', 'Transfer window', 'Transfer fee', 'Apps', 'Goals']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Thompson', 'ENG', 'Retired', 'Summer', 'n/a', 25.0, 5.0]
SQL:

assistant: SELECT SUM("Goals") FROM "Table" WHERE "Transfer window" = 'summer' AND "Name" = 'kenton';