A man with headlight gear is standing in a cave.
The man is crawling through a cave.
One cannot simultaneously be standing and crawling.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_cave(x3) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_gear(x2) & a_headlight(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & through(e1,x2) & n_cave(x2) & Actor(e1,x1) & v_crawl(e1))