A small boy stands in front of a mechanical elephant spouting smoke.
Two small girls are petting an elephant calf.
You wouldn't pet a mechanical animal, you would only pet a real animal like an elephant calf.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x3) & of(x3,x4) & Theme(e1,x6) & Actor(e1,x5) & v_spout(e1) & n_smoke(x6) & (x4 = x5) & n_elephant(x4) & a_mechanical(s2) & Theme(s2,x4) & n_front(x3) & n_stand(x1) & of(x1,x2) & n_boy(x2) & a_small(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_pet(e1) & n_calf(x2) & of(x2,x3) & n_elephant(x3) & n_girl(x1) & a_small(s1) & Theme(s1,x1) & card_eq_2(x1))