Context: On August 5, 2008, SCA and Bertelsmann announced that Sony had agreed to acquire Bertelsmann's 50% stake in Sony BMG. Sony completed its acquisition of Bertelsmann's 50% stake in the companies' joint venture on October 1, 2008. The company, once again named Sony Music Entertainment Inc., became a wholly owned subsidiary of Sony Corporation through its US subsidiary SCA. The last few albums to feature a Sony BMG logo were Thriller 25 by Michael Jackson, I Am... Sasha Fierce by Beyoncé, Keeps Gettin' Better: A Decade of Hits by Christina Aguilera, and Safe Trip Home by Dido. A temporary logo was unveiled beginning December 1, 2008. The present logo was unveiled in March 2009.

Question: In what year did Sony take BMG's half stake in the company?
Answer: 2008

Question: Name one of the final albums to ever have the Sony BMG label?
Answer: Thriller 25 by Michael Jackson, I Am... Sasha Fierce by Beyoncé, Keeps Gettin' Better: A Decade of Hits by Christina Aguilera, and Safe Trip Home by Dido

Question: When was Sony's new logo revealed to the public?
Answer: 2009

Question: The first few albums to feature a Sony BMG logo were?
Answer: Unanswerable

Question: A permanent logo was unveiled on December 1 of what year?
Answer: Unanswerable

Question: The present logo was unveiled in December of what year?
Answer: Unanswerable

Question: Bertelsmann acquired Sony's 50% stake on what date?
Answer: Unanswerable