三人行
References are also made to the American sitcom "Three's Company"; "knock on the door", "take a step that is new", and "three's company" all allude to the TV show's theme song. "Taking the Santa Fe and the Atchison, Topeka" is a reference to Judy Garland's "The Harvey Girls", which itself contains an allusion to the Atchison, Topeka and Santa Fe Railway.