Q: Does "On January 6, 2009, Apple announced that DRM has been removed from 80% of the music catalog, and that it would be removed from all music by April 2009." provide a valid answer to "When did Apple reveal that most of the iTunes selection was free from DRM?"?
OPTIONS:
- yes
- no
A: yes

Q: Does "Perhaps the most famous raid by Oeselian pirates occurred in 1187, with the attack on the Swedish town of Sigtuna by Finnic raiders from Couronia and Oesel." provide a valid answer to "What important figure was killed in the raid?"?
OPTIONS:
- yes
- no
A: no

Q: Does "Following its defeat, Japan's Shinto Emperor stepped down as the divine leader through the Shinto Directive, because the Allied Powers believed this was the major political cause of Japan's military aggression and deconstruction process soon took place to install a new liberal-democratic constitution to the Japanese public as the current Constitution of Japan." provide a valid answer to "When did Japan surrender?"?
OPTIONS:
- yes
- no
A: no

Q: Does "Through their correspondence European scientists first learned about the Chinese science and culture." provide a valid answer to "Who was the Needham Research Institute named after?"?
OPTIONS:
- yes
- no
A:
no