***********************************************************
DATA:
-----
The data is in grepable format

cd /afs/cs.cmu.edu/academic/class/11722-s08/DATA/TREEBANK_3

MRG-BROWN Corpus is in:
	MRG/BROWN/BROWN.t2c

MRG-WSJ Corpus is in:
	MRG/WSJ/WSJ.t2c

MRG-SWBD Corpus is in:
	MRG/SWBD/SWBD.t2c

MRG-ATIS Corpus is in:
	MRG/ATIS/ATIS.t2c

PRD-BROWN Corpus is in:
        PRD/BROWN/BROWN.t2c

PRD-WSJ Corpus is in:
        PRD/WSJ/WSJ.t2c

PRD-SWBD Corpus is in:
        PRD/SWBD/SWBD.t2c

PRD-ATIS Corpus is in:
        PRD/ATIS/ATIS.t2c


***********************************************************

HOW TO RUN:
-----------
Command line arguments: 
       ./tgrep2 [options] <pattern> ....

	enter /afs/cs.cmu.edu/academic/class/11722-s08/DATA/TREEBANK_3 directory

        (1)./tgrep2 -c MRG/BROWN/BROWN.t2c 'NP<VP'

                OR

        (2) (a)setenv TGREP2_CORPUS MRG/BROWN/BROWN.t2c
            (b)./tgrep2 'NP < VP'


	The above pattern looks for NPs that immediately dominate VPs

************************************************************

MANUAL:
------
Manual in: Tgrep2/tgrep2_manual.pdf

************************************************************

Some useful command-line options:
---------------------------------

Searching for NPs that immediately dominate VPs:

      ./tgrep2 'NP < VP' 

If you want to look at this output as it is generated, use:

      ./tgrep2 'NP < VP' | more 

If you want to save the output to a file, use:

      ./tgrep2 'NP < VP' > filename 

If you want to see only the terminal nodes of the tree, use:

      ./tgrep2 -t 'NP < VP' 

If you want to see the tree for the whole sentence in which the match occurred, use:

      ./tgrep2 -w 'NP < VP' 

If there are multiple matches for the pattern in a sentence, you can find them all with:

      ./tgrep2 -a 'NP < VP' 

These switches can be combined, e.g. if you want to see the whole sentence that was matched, use:

      ./tgrep2 -tw 'NP < VP' 

Multiple patterns, use:
	./tgrep2 'NP < VP;NP<DT'

Long format:
	./tgrep2 -l 'NP < VP'

For more options please see: Tgrep2/tgrep2_manual.pdf
************************************************************

USEFUL OPERATORS:
-----------------
A < B A is the parent of (immediately dominates) B.
A > B A is the child of B.
A <N B B is the Nth child of A (the first child is <1).
A >N B A is the Nth child of B (the first child is >1).
A <, B Synonymous with A <1 B.
A >, B Synonymous with A >1 B.
A <-N B B is the Nth-to-last child of A (the last child is <-1).
A >-N B A is the Nth-to-last child of B (the last child is >-1).
A <- B B is the last child of A (synonymous with A <-1 B).
A >- B A is the last child of B (synonymous with A >-1 B).
A <` B B is the last child of A (also synonymous with A <-1 B).
A >` B A is the last child of B (also synonymous with A >-1 B).
A <: B B is the only child of A
A >: B A is the only child of B
A << B A dominates B (A is an ancestor of B).
A >> B A is dominated by B (A is a descendant of B).
A <<, B B is a left-most descendant of A.
A >>, B A is a left-most descendant of B.
A <<` B B is a right-most descendant of A.
A >>` B A is a right-most descendant of B.
A <<: B There is a single path of descent from A and B is on it.
A >>: B There is a single path of descent from B and A is on it.
A . B A immediately precedes B.
A , B A immediately follows B.
A .. B A precedes B.
A ,, B A follows B.
A $ B A is a sister of B (and A 6= B).
A $. B A is a sister of and immediately precedes B.
A $, B A is a sister of and immediately follows B.
A $.. B A is a sister of and precedes B.
A $,, B A is a sister of and follows B.
A = B A is the same node as B (Link Modifiers).