CREATE TABLE table_24865763_2 (gt2_winning_team VARCHAR(255), lmp1_winning_team VARCHAR(255))
Who was the GT2 Winning Team if Greg Mansell Leo Mansell was the LMP1 Winning Team?
    
SQL: SELECT gt2_winning_team FROM table_24865763_2 WHERE lmp1_winning_team = "Greg Mansell Leo Mansell"