A man and two small boys jump on a trampoline.
People on a trampoline
People indicates more than one person.  Therefore a man and two boys would be people.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_trampoline(x4) & Actor(e1,x1) & v_jump(e1) & subset_of(x3,x1) & n_boy(x3) & a_small(s1) & Theme(s1,x3) & card_eq_2(x3) & subset_of(x2,x1) & n_man(x2))
exists x1 x2.(a_topic(x1) & on(x1,x2) & n_trampoline(x2) & n_people(x1))