A boy plays baseball.
A boy plays baseball with his friends.
Plays baseball does not imply the boy plays with his friends.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_baseball(x2) & n_boy(x1))
exists e1 x1 x2 x3.(with(e1,x3) & n_friend(x3) & of(x3,x1) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_baseball(x2) & n_boy(x1))