A man is standing on his head while he performs for a crowd.
A tiger is standing on his head.
a man and tiger are not the same.
exists e1 p1 x1 x2.(exists e2 x3.(for(e2,x3) & n_crowd(x3) & Actor(e2,x1) & v_perform(e2)) & n_male(x1) & n_male(x1) & while(e1,p1) & on(e1,x2) & n_head(x2) & of(x2,x1) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2.(on(e1,x2) & n_head(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_stand(e1) & n_tiger(x1))