學而時習之
[{"id": "1", "form": "學", "pos": "VERB", "head": "0", "deprel": "root"}, {"id": "2", "form": "而", "pos": "CCONJ", "head": "4", "deprel": "cc"}, {"id": "3", "form": "時", "pos": "NOUN", "head": "4", "deprel": "obl:tmod"}, {"id": "4", "form": "習", "pos": "VERB", "head": "1", "deprel": "conj"}, {"id": "5", "form": "之", "pos": "PRON", "head": "4", "deprel": "obj"}]