Subject: Re: Question on Question 2, Part 2
From: Pengcheng Wu (wupc@ccs.neu.edu)
Date: Tue Oct 15 2002 - 16:27:00 EDT
On Mon, 14 Oct 2002, a student wrote:
> I am having trouble with UNKNOWN35. I have analyzed it for a long time,
> and it seems like that line should not exist. I can't see why there would
> even be a blank line in its place. After the line that begins with
> "List", the line that begins with "from" should follow. Please give me a
> helpful hint or two on what that unknown should be. If it is a mistake,
> then what should I put for an answer?
It is possible that some UNKNOWs can be empty, if you believe it is true,
then just put a string "Empth String" there.
--Pengcheng Wu
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