Table: mlw_diesel_locomotives_2
Columns: model
specification
build_date
total_produced
wheel_arrangement
prime_mover
power_output

Question: What is the specification of the locomotives with a total produced more than 19 and a model of fb-1?
SQL: SELECT "specification" FROM mlw_diesel_locomotives_2 WHERE "total_produced" > 19 AND "model" = 'fb-1'

Question: What is the build date of the locomotives with a total produced less than 45 and a fb-2 model?
SQL: SELECT "build_date" FROM mlw_diesel_locomotives_2 WHERE "total_produced" < 45 AND "model" = 'fb-2'

Question: What is the prime mover of the locomotive with a fa-2 model?
SQL: SELECT "prime_mover" FROM mlw_diesel_locomotives_2 WHERE "model" = 'fa-2'

Question: What is the build date of the locomotive with a fa-2 model?
SQL: SELECT "build_date" FROM mlw_diesel_locomotives_2 WHERE "model" = 'fa-2'