what roller coasters that lasts less than 150.0 have a capacity of 1556?
(AND amusement_parks.roller_coaster (AND (le amusement_parks.ride.duration 150.0^^http://www.w3.org/2001/XMLSchema#float) (JOIN amusement_parks.ride.capacity 1556^^http://www.w3.org/2001/XMLSchema#integer)))