premise: "Happy Birthday" is a 1980 song and by The Boys Next Door. It was released as a single on 16 February 1980 on Missing Link. The song is not related to the popular birthday song "Happy Birthday to You". The first album it appeared on was "The Birthday Party". It was later included as track two on the 1992 compilation "Hits".
hypothesis: Happy Birthday to You was released as a single in February 1980.
reason: Happy Birthday to You could have been released as a single by someone in February 1980. I think the model only noted that my statement was not about the "Happy Birthday" by The Boys Next Door and concluded that it was wrong.