Table: regional_airliners
Columns: model
seats
period
built
country

Question: How many cabins were built in the time between 1967-1987?
SQL: SELECT "built" FROM regional_airliners WHERE "period" = '1967-1987'

Question: Between which years were there 241 fokker 70 model cabins built?
SQL: SELECT "period" FROM regional_airliners WHERE "built" < 241 AND "model" = 'fokker 70'