Does the sentence "He also perfected a sparse, percussive blues style, especially up the neck in keys that had not been used much in country music, notably B and E." provide a valid answer to the question "What keys was Monroe popular for?" OPTIONS:
- yes
- no

A: yes

Does the sentence "Classical music has often incorporated elements or material from popular music of the composer's time." provide a valid answer to the question "Popular music from the composer's time was incorporation into what?" OPTIONS:
- yes
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A: yes

Does the sentence "The Korean War (in South Korean Hangul: , Hanja: , Hanguk Jeonjaeng, "Korean War"; in North Korean Chosungul: , Joguk Haebang Jeonjaeng, "Fatherland Liberation War"; 25 June 1950 27 July 1953)[a] was started when North Korea invaded South Korea." provide a valid answer to the question "In what year did the Korean War begin?" OPTIONS:
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A: yes

Does the sentence "Canon law was also studied, and around 1140 a monk named Gratian (fl. 12th century), a teacher at Bologna, wrote what became the standard text of canon lawthe Decretum." provide a valid answer to the question "Who wrote the Decretum?" OPTIONS:
- yes
- no

A:
yes