Premise: "Janie Jones" is a song by the English punk rock band The Clash. It is the opening track on their eponymous debut album (1977). The subject of the song, Janie Jones, was a famous madam in London during the 1970s and had been a pop singer during the 1960s.
Hypothesis: Janie Jones is a song by the English band The Clash. The song is about Janie Jones, a famous singer in London  during the 1960s.