query: SELECT count(*) FROM camera_lens WHERE id NOT IN ( SELECT camera_lens_id FROM photos )
question: How many camera lenses not used in taking any photos?
query_toks: SELECT count ( * ) FROM camera_lens WHERE id NOT IN ( SELECT camera_lens_id FROM photos )
query_toks_no_value: select count ( * ) from camera_lens where id not in ( select camera_lens_id from photos )
question_toks: How many camera lenses not used in taking any photos?