A man walking in the water on the shore.
A man is sitting on a sofa.
A man can't be walking in the water while sitting on a sofa
exists x1 x2 x3 x4.(n_shore(x4) & n_water(x3) & a_topic(x1) & in(x1,x3) & on(x3,x4) & n_walking(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(on(e1,x2) & n_sofa(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))