A boy pets a sleeping tiger.
A girl is touching an elephant.
TIGER IS NOT AN ELEPHANT
exists e2 e1 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_pet(e2) & n_tiger(x2) & Actor(e1,x2) & v_sleep(e1) & n_boy(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_touch(e1) & n_elephant(x2) & n_girl(x1))