A woman softball player is out at the plate as she dives head first.
A woman is out.
For sentence 2, what is the woman out of? Why is she out of it? We don't know. It doesn't make sense. Sentence 1 lets us know that she's a softball player, and by saying she's "out," the reader gets information about the game.
exists p1 p2 s1 x1 x2 x3 x4.(n_female(x4) & n_plate(x4) & exists e1 s2 x5.(a_first(s2) & Manner(e1,s2) & Theme(e1,x5) & Actor(e1,x4) & v_dive(e1) & n_head(x5)) & as(p1,p2) & a_out(s1) & Manner(p1,s1) & at(x1,x4) & n_player(x1) & of(x1,x3) & n_softball(x3) & of(x1,x2) & n_woman(x2))
exists s1 x1.(Theme(s1,x1) & a_out(s1) & n_woman(x1))