Teacher:" Here are two birds, one is a swallow, the other is sparrow. Now who can tell us which is which?"

　　Student: "I cannot point out but I know the answer."

　　Teacher: "Please tell us. "

　　Student: "The swallow is beside the sparrow and the sparrow is beside the swallow."

　　老师： “这儿有两只鸟，一只是麻雀。谁能指出哪只是燕子，哪只是麻雀吗? 　　学生：我指不出，但我知道答案。”

　　老师：“请说说看。”

　　学生：“燕子旁边的就是麻雀，麻雀旁边的就是燕子。”