[Corpora-List] Stupid tgrep problem: negation not working

[Kevin B. Cohen]

List members,

I am having a dumb tgrep problem that I'm hoping someone else might
have run into.  I'm trying to specify 'does not (immediately)
dominate.'  However, I keep getting messages saying "Event not found"
with respect to the dominance or immediate dominance operator.

If I don't negate the dominance/immediate dominance operator,
everything is fine.  Thus:


babel>tgrep 'ADJP < CC' | more


(ADJP (VBG increasing)
      (CC and)
      (VBG diversifying))

(ADJP (RB so)
      (JJ fragile)
      (CC and)
      (JJ minute))

But:


babel>tgrep 'ADJP !< CC' | more
<: Event not found

I've tried this with single quotes and double quotes--no difference.
I've also tried it with the precedence operator--same pattern.

Any hints?

Kev
-- 
K. B. Cohen
Biomedical Text Mining Group Lead, Center for Computational Pharmacology
and
Lead Artificial Intelligence Engineer, The MITRE Corporation, Human
Language Technology Division
303-916-2417 (cell) 303-377-9194 (home)
http://compbio.uchsc.edu/Hunter_lab/Cohen

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