An old , perhaps homeless , man is sitting at a table with a glass in front of him .
It is probably the case that an old , possibly homeless man is sitting at a table waiting to be fed .
It is probably not the case that an old , possibly homeless man is sitting at a table waiting to be fed .
It is probably the case that an old , possibly homeless man is sitting at a table waiting to be fed .
An old , possibly homeless man is sitting at a table waiting to be fed .