Children look through a fence.
Children are riding bikes down the street.
You can't look through a fence while you ride your bike.
exists e1 x1 x2.(through(e1,x2) & n_fence(x2) & Actor(e1,x1) & v_look(e1) & n_child(x1))
exists e1 x1 x2 x3.(n_street(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & down(x2,x3) & n_bike(x2) & n_child(x1))