CREATE TABLE table_23993 ("Round" FLOAT, "Pick #" FLOAT, "Player" CLOB, "Position" CLOB, "Height" CLOB, "Weight" CLOB, "College" CLOB, "Status" CLOB)

which college had a running back player
SELECT "College" FROM table_23993 WHERE "Position" = 'Running back'
SELECT "College" FROM "table_23993" WHERE "Position" = 'Running back'