Man standing on a chair with a net.
A man is cleaning leaves out of the pool with a net.
Man cannot be standing on a chair and cleaning pool at the same time.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & with(x3,x4) & n_net(x4) & n_chair(x3) & n_standing(x1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2 x3 x4.(n_pool(x3) & of(e1,x3) & with(x3,x4) & n_net(x4) & r_out(e1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_leaf(x2) & n_man(x1))