Table: southern_rail_locomotives_2
Columns: class
wheel_arrangement
manufacturer
year_made
quantity_made
quantity_preserved
year_s_withdrawn
comments

Question: What year was the wheel arrangement 0-6-0 and a class 302?
SQL: SELECT "year_made" FROM southern_rail_locomotives_2 WHERE "wheel_arrangement" = '0-6-0' AND "class" = '302'

Question: How many have a class of 330?
SQL: SELECT "quantity_made" FROM southern_rail_locomotives_2 WHERE "class" = '330'

Question: What comments are made in 1875?
SQL: SELECT "comments" FROM southern_rail_locomotives_2 WHERE "year_made" = '1875'