Table: australian_loco_classes
Columns: wheel_arrangement
manufacturer_serial_numbers
year_introduced_mrwa
quantity_made
quantity_preserved
year_s_withdrawn

Question: What is the manufacturer serial number of the 1963 withdrawn year?
SQL: SELECT "manufacturer_serial_numbers" FROM australian_loco_classes WHERE "year_s_withdrawn" = '1963'

Question: What was the year the MRWA with a wheel arrangement of 4-6-2 was introduced?
SQL: SELECT "year_introduced_mrwa" FROM australian_loco_classes WHERE "wheel_arrangement" = '4-6-2'