A boy falling headfirst into a pool
A boy is sitting on the edge of the pool, dipping his feet.
A boy falling headfirst into a pool cannot be sitting on the edge of the pool
exists e1 x1 x2 x3 x4.(a_topic(x1) & into(e1,x4) & n_pool(x4) & Theme(e1,x3) & Actor(e1,x2) & v_fall(e1) & n_headfirst(x3) & (x1 = x2) & n_boy(x1))
exists e2 e1 x1 x2 x3 x4.(n_foot(x4) & of(x4,x2) & n_male(x2) & n_pool(x3) & n_edge(x2) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_dip(e2) & on(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_sit(e1) & n_boy(x1))