As he reached the bottom, dust billowing around him and covering his clothes in a thin gritty film, he could see some shapes that he recognized as human moving across the lot.
(dust; billowing; L:around him) (he; could see; some shapes that he recognized as human moving across the lot) (some shapes; recognized; as human moving; L:across the lot) (he; reached; the bottom, dust) Context(he reached,List([3, 13))):(he; reached the bottom, dust covering; his clothes; L:in a thin gritty film)
he reached,List([3, 13))
dust he some shapes he he
billowing could see recognized reached reached the bottom, dust covering
L:around him
some shapes that he recognized as human moving across the lot
as human moving L:across the lot
the bottom, dust
his clothes L:in a thin gritty film