Two guys are shaving their heads with razors.
Two guys are shaving off their hair.
When you shave your head you're shaving off your hair.
exists e1 x1 x2 x3.(with(e1,x3) & n_razor(x3) & Theme(e1,x2) & Actor(e1,x1) & v_shave(e1) & n_head(x2) & of(x2,x1) & n_thing(x1) & n_guy(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_shave(e1) & n_hair(x2) & of(x2,x1) & n_thing(x1) & n_guy(x1) & card_eq_2(x1))