user: Question: In how many teams is Waqar Younis the head coach?
Columns: ['Team', 'Province', 'Owner(s)', 'Price', 'Captain', 'Head coach', 'Icon Player']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Basnahira Cricket Dundee', 'Western', 'Indian Cricket Dundee Limited', '$4.33 million', 'Tillakaratne Dilshan', 'Duleep Mendis', 'Tillakaratne Dilshan']
SQL:

assistant: SELECT COUNT("Team") FROM "Table" WHERE "Head coach" = 'Waqar Younis';