A girl jumps in the grass.
An aspiring acrobat is practicing her routine in a park.
Not all girls who jump are aspiring acrobats.  Not all jumps are routines.  Not all grass is in a park.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_girl(x1))
exists e1 e2 x1 x2 x3.(in(e2,x3) & n_park(x3) & Theme(e2,x2) & Actor(e2,x1) & v_practice(e2) & n_routine(x2) & of(x2,x1) & n_female(x1) & n_acrobat(x1) & Actor(e1,x1) & v_aspire(e1))