please show the name of all the aircrafts.
select aircraft from aircraft
please show the description of the Aircraft Robinson R-22
select description from aircraft where aircraft = 'Robinson r-22'
Please show the names of aircrafts associated with airport with name "London Gatwick".
select t1.aircraft from aircraft as t1 join airport_aircraft as t2 on t1.aircraft_id = t2.aircraft_id join airport as t3 on t2.airport_id = t3.airport_id where t3.airport_name = "London Gatwick"