CREATE TABLE table_70736 ("Model" CLOB, "Build date" CLOB, "Total produced" FLOAT, "Wheel arrangement" CLOB, "Prime mover" CLOB, "Power output" CLOB)

What is the prime mover for a build date in 1975?
SELECT "Prime mover" FROM table_70736 WHERE "Build date" = '1975'
SELECT "Prime mover" FROM "table_70736" WHERE "Build date" = '1975'