user: Question: What is the total number of Total, when Club is leeds united, and when League Goals is 13?
Columns: ['Scorer', 'Club', 'League goals', 'FA Cup goals', 'League Cup goals', 'Texaco Cup goals', 'Euro competitions', 'Total']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text', 'real']
Sample row: ['Martin Chivers', 'Tottenham', '21', '1', 7.0, '5', '—', 34.0]
SQL:

assistant: SELECT SUM("Total") FROM "Table" WHERE "Club" = 'leeds united' AND "League goals" = '13';