Table: water_speed_records
Columns: speed
craft
pilot_s
location
date

Question: Who was the pilot at lake dumbleyung?
SQL: SELECT "pilot_s" FROM water_speed_records WHERE "location" = 'lake dumbleyung'

Question: How fast was the speed during the record set at Coniston Water that was piloted by Malcolm Campbell?
SQL: SELECT "speed" FROM water_speed_records WHERE "location" = 'coniston water' AND "pilot_s" = 'malcolm campbell'