Premise: "Never Be Rude to an Arab" is a satirical song by the members of "Monty Python's Flying Circus", originally appearing on the 1980 album "Monty Python's Contractual Obligation Album". It appears as sung by Terry Jones in the theatrically released concert film "Monty Python Live at the Hollywood Bowl" and was included on the compilation album "Monty Python Sings".
Hypothesis: The compilation album "Monty Python Sings" sold 3 million copies worldwide.