A farmer has five sons.They are Ted,Bob,Tom,John and Bill. John has no elder brother. He was four years older when his first younger brother was born. The number of Tom's elder brothers is equal to his younger brothers. Bill will be twenty-one years old next year, and he is five years older than Bob. Bob is two years younger than Tom. Ted was sad because he has no younger brother. There are twelve years between him and John.

　　一個農民有5個兒子。他們是Ted,Bob,Tom,John 和 Bill。John沒有比他大的哥哥，他比第一個出生的比他小的那個弟弟大4歲，Tom哥哥的數量和他的弟弟的數量是一樣的(就是他是老三)Bill 明年就21歲了，他比Bob大5歲，比Tom小2歲，Ted因為沒有弟弟而難過 Ted 和John之間差了12歲