A boy crawls under a house outside.
There is a boy crawling.
"under a house outside." is extra information.
exists e1 x1 x2 x3.(under(e1,x2) & n_outside(x2) & of(x2,x3) & n_house(x3) & Actor(e1,x1) & v_crawl(e1) & n_boy(x1))
exists p1 x1 x2 x3.((x1 = x2) & n_crawling(x2) & of(x2,x3) & n_boy(x3))