A group of people put two of their fingers on a Frisbee.
There are people participating in a trick.
You can not infer there is a trick.
exists e1 x1 x2 x3 x4 x5.(on(e1,x5) & n_frisbee(x5) & Theme(e1,x3) & Actor(e1,x1) & v_put(e1) & of(x3,x4) & n_finger(x4) & of(x4,x1) & n_thing(x1) & n_thing(x3) & card_eq_2(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & in(e1,x4) & n_trick(x4) & Actor(e1,x3) & v_participate(e1) & (x2 = x3) & n_people(x2))