A girl in a red shirt and brown pants is skating.
a girl is skating in a competition
Skating does not imply skating in a competition.
exists e1 s1 s2 x1 x2 x3 x4.(Actor(e1,x1) & v_skate(e1) & in(x1,x2) & subset_of(x4,x2) & n_pants(x4) & a_brown(s2) & Theme(s2,x4) & subset_of(x3,x2) & n_shirt(x3) & a_red(s1) & Theme(s1,x3) & n_girl(x1))
exists e1 x1 x2.(in(e1,x2) & n_competition(x2) & Actor(e1,x1) & v_skate(e1) & n_girl(x1))