A young man is shooting pool.
The young man is playing pool with his friend.
A man playing pool with another person does not imply that the other person is his friend.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_shoot(e1) & n_pool(x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_friend(x3) & of(x3,x1) & n_male(x1) & n_man(x1) & a_young(s1) & Theme(s1,x1) & with(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_pool(x2))