Question: How many cabins were built in the time between 1967-1987?
SQL: SELECT "Built" FROM "2-12127130-6" WHERE "Period" = '1967-1987';

Question: Between which years were there 241 Fokker 70 model cabins built?
SQL: SELECT "Period" FROM "2-12127130-6" WHERE "Built" < 241.0 AND "Model" = 'Fokker 70';