A female batter misses a yellow ball while another player practices behind her.
The practice player is the female batter teammate.
Just because another player is practicing, it does not mean that they are  teammate.
exists e1 s1 s2 x1 x2 x3 x4 x5.(while(e1,x5) & behind(x5,x1) & n_female(x1) & n_practice(x5) & of(x5,x4) & n_player(x4) & -(x5 = x3) & n_practice(x3) & of(x3,x4) & Theme(e1,x2) & Actor(e1,x1) & v_miss(e1) & n_ball(x2) & a_yellow(s2) & Theme(s2,x2) & n_batter(x1) & a_female(s1) & Theme(s1,x1))
exists p1 s1 x1 x2 x3 x4.(n_teammate(x3) & of(x3,x4) & n_batter(x4) & a_female(s1) & Theme(s1,x3) & n_player(x1) & of(x1,x2) & n_practice(x2) & (x1 = x3))