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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_parsed_query(self):
 """ Returns string with last query parsed. Assuming called after search_datasets."""

        return '{} OR {}'.format(
            self.backend.dataset_index.get_parsed_query()[0],
            self.backend.partition_index.get_parsed_query()[0])