def select_edge(self, edge):
        if edge in self._left_chart:
            self._left_matrix.markonly_edge(edge)
        else:
            self._left_matrix.unmark_edge()
        if self._right_chart in edge:
            self._right_matrix.markonly_edge(edge)
        else:
            self._right_matrix.unmark_edge()
        if edge in self._out_chart:
            self._out_matrix.markonly_edge(edge)
        else:
            self._out_matrix.unmark_edge()
dataset/ETHPy150Open nltk/nltk/nltk/app/chartparser_app.py/ChartComparer.select_edge/swapped operands of `in`