Table: steam_locomotives
Columns: type
fleet_numbers
quantity_made
date_made
gsr_class
inchicore_class
gsr_nos
withdrawn

Question: What was the GSR number on the date 1883?
SQL: SELECT "gsr_nos" FROM steam_locomotives WHERE "date_made" = '1883'

Question: What was the quantity of the fleet information for DWWR 50 and 51?
SQL: SELECT "quantity_made" FROM steam_locomotives WHERE "fleet_numbers" = 'dwwr 50 and 51'

Question: What was the quantity for Inchicore of J7?
SQL: SELECT "quantity_made" FROM steam_locomotives WHERE "inchicore_class" = 'j7'