One boy jumps over another boy on a trampoline.
The boys are playing leap frog on the trampoline.
Jumping over one another does not imply playing leap frog.
exists e1 x1 x2 x3.(over(e1,x2) & on(x2,x3) & n_trampoline(x3) & n_boy(x2) & -(x2 = x1) & n_boy(x1) & n_boy(x1) & Actor(e1,x1) & v_jump(e1) & card_eq_1(x1))
exists e1 x1 x2 x3 x4.(n_trampoline(x4) & n_boy(x1) & on(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_frog(x2) & of(x2,x3) & n_leap(x3))