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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 reciprocal_remove(self):
 """Removes results rows for which the n-gram is not present in at least one text in each labelled set of texts."""

        self._logger.info(
            'Removing n-grams that are not attested in all labels')
        self._matches = self._reciprocal_remove(self._matches)