Q: Does "Jennifer Lopez and Steven Tyler joined Randy Jackson as judges following the departures of Simon Cowell (who left to launch the U.S. version of The X Factor), Kara DioGuardi (whose contract was not renewed) and Ellen DeGeneres, while Nigel Lythgoe returned as executive producer." provide a valid answer to "What show did Simon Cowell join after leaving American Idol?"?
A: yes

Q: Does "Many grammar schools were either closed or changed to comprehensive status." provide a valid answer to "Grammar schools that did not close were converted to what?"?
A: no

Q: Does "Skinner began teaching part-time at age 18, until the Great Depression forced him to begin teaching full-time and learn a broader range of instruments." provide a valid answer to "At what age did Phil Skinner begin playing music?"?
A: no

Q: Does "According to estimates from Demoskop Weekly, in 2004 there were 14,400,000 native speakers of Russian in the country, and 29 million active speakers." provide a valid answer to "How many Ukrainians speak Russian natively as of 2004?"?
A:
yes