The boy does a flip over a grassy yard.
A boy is practicing for a gymnastics routine.
Just because he does a flip doesn't mean it's a gymnastics routine.
exists e1 s1 x1 x2 x3.(n_boy(x1) & over(e1,x3) & n_yard(x3) & a_grassy(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_flip(x2))
exists e1 x1 x2 x3.(for(e1,x2) & n_routine(x2) & of(x2,x3) & n_gymnastics(x3) & Actor(e1,x1) & v_practice(e1) & n_boy(x1))