Quem era a equipa vencedora do GT2 se o Greg Mansell e o Leo Mansell eram a equipa vencedora do LMP1?
CREATE TABLE table_24865763_2 (gt2_winning_team VARCHAR, lmp1_winning_team VARCHAR)
SELECT gt2_winning_team FROM table_24865763_2 WHERE lmp1_winning_team = "Greg Mansell Leo Mansell"