input: Write a python function to find features in a document and return a dictionary with the words from word_features as keys and boolean values indicating their presence in the document.
  assert find_features(["the", "movie", "was", "great"]) == {'plot': False, 'movie': True, 'was': True, 'great': True, 'bad': False}
  assert find_features(["this", "is", "a", "bad", "movie"]) == {'plot': False, 'movie': True, 'was': False, 'great': False, 'bad': True}
  assert find_features(["the", "plot", "was", "boring"]) == {'plot': True, 'movie': False, 'was': True, 'great': False, 'bad': False}
output: def find_features(document):
      word_features = ["plot", "movie", "was", "great", "bad"]
      features = {}
      for word in word_features:
          features[word] = word in document
      return features