code: def _fill_table_entry(self, row, col):
          "
          Fill an entry of the observation table.
          Args:
              row (str): The row of the observation table
              col (str): The column of the observation table
          Returns:
              None
          """
          self.observation_table[row, col] = self._membership_query(row + col)
docs: Fill an entry of the observation table.
          Args:
              row (str): The row of the observation table
              col (str): The column of the observation table
          Returns:
              None