A young boy holding a brush over the sink.
Sharks are circling the boat.
A young boy holding a brush over the sink cannot happen simultaneously with sharks circling a boat.
exists e1 s1 x1 x2 x3 x4.(n_sink(x4) & a_topic(x1) & over(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_brush(x3) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_boat(x2) & Theme(e1,x2) & Actor(e1,x1) & v_circle(e1) & n_shark(x1))