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import os, sys; sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
from pattern.search import search, match
from pattern.en import parsetree
# This example demonstrates an interesting search pattern that mines for comparisons.
# Notice the use of the constraint "be".
# If the output from the parser includes word lemmas (e.g., "doing" => "do")
# these will also be matched. Using "be" then matches "is", "being", "are", ...
# and if underspecification is used "could be", "will be", "definitely was", ...
p = "NP be ADJP|ADVP than NP"
for s in (
"the turtle was faster than the hare",
"Arnold Schwarzenegger is more dangerous than Dolph Lundgren"):
t = parsetree(s, lemmata=True) # parse lemmas
m = search(p, t)
if m:
# Constituents for the given constraint indices:
# 0 = NP, 2 = ADJP|ADVP, 4 = NP
print m[0].constituents(constraint=[0,2,4])
print
p = "NP be ADJP|ADVP than NP"
t = parsetree("the turtle was faster than the hare", lemmata=True)
m = match(p, t)
print t
print
for w in m.words:
print w, " \t=>", m.constraint(w)
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