CREATE TABLE table_name_71 (touchdowns VARCHAR, player VARCHAR, extra_points VARCHAR, position VARCHAR)

How many touchdowns are there when there were 0 extra points and Hal Weeks had left halfback?
SELECT touchdowns FROM table_name_71 WHERE extra_points = 0 AND position = "left halfback" AND player = "hal weeks"
SELECT "touchdowns" FROM "table_name_71" WHERE "extra_points" = 0 AND "hal weeks" = "player" AND "left halfback" = "position"