code: def combine_relevance_tables(relevance_tables):
      
      def _combine(a, b):
          a.relevant |= b.relevant
          a.p_value = a.p_value.combine(b.p_value, min, 1)
          return a
  
      return reduce(_combine, relevance_tables)
docs: Create a combined relevance table out of a list of relevance tables,
      aggregating the p-values and the relevances.
  
      :param relevance_tables: A list of relevance tables
      :type relevance_tables: List[pd.DataFrame]
      :return: The combined relevance table
      :rtype: pandas.DataFrame