张三说李四在说谎，李四说王五在说谎，王五说张三和李四都在说谎.现在问z这三人中到 底谁说的是真话，谁说的是假话?-Zhang said that John Doe is lying, lying five John Doe said the king, the king of five said Joe Smith and John Doe are lying now asking z this trio in the end Who is telling the truth, who sa