def p_relate_statement_2(self, p):
        '''statement : RELATE instance_name TO instance_name ACROSS rel_id DOT phrase'''
        p[0] = RelateNode(from_variable_name=p[2],
                          to_variable_name=p[4],
                          rel_id=p[6],
                          phrase=p[8])
statement : RELATE instance_name TO instance_name ACROSS rel_id DOT phrase