CREATE TABLE table_name_8 (road_numbers VARCHAR, class VARCHAR, builder VARCHAR, railroad__quantity_ VARCHAR)

what is the road numbers when the builder is alco, the railroad (quantity) is union pacific railroad (105) and the class is csa-2?
SELECT road_numbers FROM table_name_8 WHERE builder = "alco" AND railroad__quantity_ = "union pacific railroad (105)" AND class = "csa-2"
SELECT "road_numbers" FROM "table_name_8" WHERE "alco" = "builder" AND "class" = "csa-2" AND "railroad__quantity_" = "union pacific railroad (105)"