Someone with a wave rolling over them.
The boy rides his dune buggy along the beach.
You can't ride a buggy while a wave is rolling over.
exists x1 x2 x3.(a_topic(x1) & over(x1,x2) & n_thing(x2) & Time(x1,x3) & n_rolling(x3) & with(x1,x2) & n_wave(x2) & n_person(x1))
exists e1 x1 x2 x3 x4.(n_beach(x4) & n_buggy(x2) & of(x2,x3) & n_dune(x3) & of(x2,x1) & n_male(x1) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & along(x2,x4))