@classmethod
    def getSentenceAttributes(cls):
        attributes = set(["type"])
        for attributeList in cls._SENTENCE_CONTENTS.values():
            for attribute in attributeList:
                if attribute is None:
                    continue
                attributes.add(attribute)

        return attributes
Returns a set of all attributes that might be found in the sentences
dataset/ETHPy150Open twisted/twisted/twisted/positioning/_sentence.py/_PositioningSentenceProducerMixin.getSentenceAttributes