Context: In September 2007, during a lawsuit with patent holding company Burst.com, Apple drew attention to a patent for a similar device that was developed in 1979. Kane Kramer applied for a UK patent for his design of a "plastic music box" in 1981, which he called the IXI. He was unable to secure funding to renew the US$120,000 worldwide patent, so it lapsed and Kramer never profited from his idea.

Question: Apple was involved in a lawsuit with which company in 2007?
Answer: Burst.com

Question: Who previously applied for a patent for an iPod-like device?
Answer: Kane Kramer

Question: In what country did Kane Kramer apply for his patent?
Answer: UK

Question: In what year did Kane Kramer apply for his patent?
Answer: 1981

Question: What did Kane Kramer call the device for which he wanted a patent?
Answer: IXI

Question: What patent holding company sued Apple in 2007?
Answer: Burst.com

Question: What was the name of the previously-patented music player from 1981?
Answer: IXI

Question: Who was the holder of the previous patent for the "plastic music box"?
Answer: Kane Kramer