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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_generic_schema(self):
 """ Returns whoosh's generic schema of the dataset. """

        schema = Schema(
            vid=ID(stored=True, unique=True),  # Object id
            title=NGRAMWORDS(),
            keywords=KEYWORD,  # Lists of coverage identifiers, ISO time values and GVIDs, source names, source abbrev
            doc=TEXT)  # Generated document for the core of the topic search
        return schema