A woman wearing a plaid dress plays an instrument while standing near a tree.
A woman plays an instrument in the park.
There isn't necessarily any park anywhere, even though the woman is standing near a tree.
exists e3 e2 e1 s1 x1 x2 x3 x4 x5.(while(e2,e3) & near(e3,x5) & n_tree(x5) & Actor(e3,x1) & v_stand(e3) & Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & n_instrument(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_dress(x3) & a_plaid(s1) & Theme(s1,x3) & (x1 = x2) & n_woman(x1))
exists e1 x1 x2 x3.(n_park(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_instrument(x2) & n_woman(x1))