A girl blows a bubble in the water.
The girl is riding a tricycle.
You can't blow bubbles in the water and ride a tricycle at the same time.
exists x4.(n_water(x4) & all x1.(n_bubble(x1) -> exists x2 x3.(a_topic(x2) & in(x2,x4) & for(x2,x1) & n_blow(x2) & of(x2,x3) & n_girl(x3))))
exists e1 x1 x2.(n_girl(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_tricycle(x2))