A man wearing a sweater is pushing an old man wearing a suit and blue tie in a wheelchair next to a row of bookshelves .
the two men are reading in a libary
A man wearing a sweater is pushing an old man wearing a suit and blue tie in a wheelchair next to a row of bookshelves.
the two men are reading in a libary
If the two men are reading then one of them cannot be pushing the other in a wheelchair.
If the two men are reading then one of them can not be pushing the other in a wheelchair .