A man makes a call on a cellphone.
A man is making a call to his friend.
Answer :The fact that a man is on a cellphone does not mean he is making a call to his friend.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & on(x2,x3) & n_cellphone(x3) & n_call(x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & to(x2,x3) & n_friend(x3) & of(x3,x1) & n_male(x1) & n_call(x2) & n_man(x1))