Three men are walking down a road.
Three men crawling down the beach.
Three men cannot be both walking down a road and crawling down the beach at the same time.
exists e1 x1 x2.(down(e1,x2) & n_road(x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_beach(x3) & a_topic(x1) & down(e1,x3) & Actor(e1,x2) & v_crawl(e1) & (x1 = x2) & n_man(x1) & card_eq_3(x1))