A man in a red baseball uniform is throwing a pitch.
The man is a baseball player.
Just because a man is wearing a baseball uniform doesn't mean that the is a baseball player.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_throw(e1) & n_pitch(x4) & in(x1,x2) & n_uniform(x2) & of(x2,x3) & n_baseball(x3) & a_red(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2 x3.((x1 = x2) & n_player(x2) & of(x2,x3) & n_baseball(x3)))