code: def test_tokens_sent(doc):
      """Test token.sent property"""
      assert len(list(doc.sents)) == 3
      assert doc[1].sent.text == "This is a sentence ."
      assert doc[7].sent.text == "This is another sentence ."
      assert doc[1].sent.root.left_edge.text == "This"
      assert doc[7].sent.root.left_edge.text == "This"
  
imports: import numpy
  import pytest
  from spacy.attrs import IS_ALPHA, IS_DIGIT, IS_LOWER, IS_PUNCT, IS_STOP, IS_TITLE
  from spacy.symbols import VERB
  from spacy.tokens import Doc
  from spacy.training import Example
  from spacy.vocab import Vocab
label_desc: Use image node_id 14 for calling a global function with example usage: test_tokens_sent(doc) without return types