Two girls are performing tricks on a trampoline.
The girls are friends
The girls could be competing in gymnastics or practicing. They do not have to be friends.
exists e1 x1 x2 x3.(on(e1,x3) & n_trampoline(x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_trick(x2) & n_girl(x1) & card_eq_2(x1))
exists p1 x1.(n_girl(x1) & exists x2.((x1 = x2) & n_friend(x2)))