def parse(self, tagged_sent):
		if not tagged_sent: return None
		(words, tags) = zip(*tagged_sent)
		chunks = self.tagger.tag(tags)
		# create conll str for tree parsing
		return conlltags2tree([(w,t,c) for (w,(t,c)) in zip(words, chunks)])

########################
## classifier chunker ##
########################
Parsed tagged tokens into parse Tree of chunks
dataset/ETHPy150Open japerk/nltk-trainer/nltk_trainer/chunking/chunkers.py/TagChunker.parse