Question: Who was the pilot at Lake Dumbleyung?
SQL: SELECT "Pilot(s)" FROM "2-1631951-1" 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 "2-1631951-1" WHERE "Location" = 'Coniston Water' AND "Pilot(s)" = 'Malcolm Campbell';