The man is on the mountainside.
A frat boy draws on his friend's face.
A man is different then a boy
exists p1 x1 x2.(n_mountainside(x2) & n_man(x1) & on(x1,x2))
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_face(x4) & of(x4,x3) & n_friend(x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_draw(e1) & n_boy(x1) & of(x1,x2) & n_frat(x2))