Barbie : The Princess & the Popstar is the 23rd entry in the Barbie film series and the 2nd Barbie film to be based on Mark Twain's 1881 novel The Prince and the Pauper (the first was Barbie as the Princess and the Pauper).
Head entity: The Prince and the Pauper
Tail entity: Barbie: The Princess & the Popstar
Relation (head \u2192 tail): based on
Inverse relation (tail \u2192 head): derivative work