# needs to be run from the root of the repository for the parser
# model path below to work
from bllipparser import RerankingParser, Tree
rrp = RerankingParser()
rrp.load_parser_model('first-stage/DATA/EN', heads_only=True)
tree1 = Tree('''(S1 (SQ (VBZ Swears) (NP (PRP she)) (VP (VBD
recognized) (NP (PRP$ his) (NN voice)) (, ,) (SBAR (IN that) (S
(NP (NNP Tim)) (VP (VBD fired)))) (, ,) ('' ') (S (S (NP (PRP It))
(VP (VBZ 's) (NP (PRP$ my) (NN money)))) (CC and) (S (NP (PRP I))
(VP (VBP want) (S (NP (PRP it)) (VP (POS '))))))) (. !)))''')
head = tree1.head()
print 'head word of sentence:', head.token
print 'head tree of sentence:', head
print
# print all syntactic dependencies
for goveror, dependent in tree1.dependencies():
print 'dependency: %s -> %s' % (goveror.token, dependent.token)
print
# demo of how to lexicalize a tree by adding the headword to the
# label of the tree
for subtree in tree1.all_subtrees():
subtree.label += '-' + subtree.head().token
print 'lexicalized tree:'
print tree1.pretty_string()
