A teenager plays her trumpet on the field at a game.
The teen is in the school band.
Just because a teen is playing her trumpet does not imply that the teen is in the school band.  The teen could simply be playing the trumpet.
exists e1 x1 x2 x3 x4.(n_field(x3) & at(e1,x4) & n_game(x4) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_trumpet(x2) & of(x2,x1) & n_female(x1) & n_teenager(x1))
exists p1 x1 x2 x3.(n_band(x2) & of(x2,x3) & n_school(x3) & n_teen(x1) & in(x1,x2))