Baby crawling inside a toy.
the baby is in a toy box
the baby is not necessarily in a box.
exists e1 x1 x2.(ne_nam_baby(x1) & inside(e1,x2) & n_toy(x2) & Actor(e1,x1) & v_crawl(e1))
exists p1 x1.(n_baby(x1) & exists x2 x3.(in(x1,x2) & n_box(x2) & of(x2,x3) & n_toy(x3)))