Table: steam_locomotives_ireland_2
Columns: type
fleet_numbers
quantity_made
manufacturer
date_made
date_withdrawn

Question: What is the date made that has an associated fleet number of 4?
SQL: SELECT "date_made" FROM steam_locomotives_ireland_2 WHERE "fleet_numbers" = '4'

Question: What is the withdrawal date associated with a date made of 1904?
SQL: SELECT "date_withdrawn" FROM steam_locomotives_ireland_2 WHERE "date_made" = '1904'