Quem foi a equipa vencedora do EP quando a equipa vencedora do CP era o Dave Clark e a equipa vencedora do GM era o Stuart Northrup?
CREATE TABLE table_29225103_2 (ep_winning_team VARCHAR, cp_winning_team VARCHAR, gm_winning_team VARCHAR)
SELECT ep_winning_team FROM table_29225103_2 WHERE cp_winning_team = "Dave Clark" AND gm_winning_team = "Stuart Northrup"