A boy about to hit a ball with a thick stick.
A boy is playing baseball.
Just because a boy hit a ball with a thick stick does not mean he is playing baseball.
exists p1 s1 x1 x2.(a_topic(x1) & Topic(s1,p1) & Actor(s1,x2) & a_about(s1) & exists e1 s2 x3 x4.(with(e1,x4) & n_stick(x4) & a_thick(s2) & Theme(s2,x4) & Theme(e1,x3) & Actor(e1,x2) & v_hit(e1) & n_ball(x3)) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_baseball(x2) & n_boy(x1))