Does the sentence "The Department of the Air Force is one of three military departments within the Department of Defense, and is managed by the civilian Secretary of the Air Force, under the authority, direction, and control of the Secretary of Defense." provide a valid answer to the question "Who appoints the top positions in the USAF, including the Assistant Secretaries and General Council?"

A: no

Does the sentence "Within thirty years about 70% of the Tainos had died." provide a valid answer to the question "What percentage of the Tainos were dead thirty years after contact with Columbus?"

A: yes

Does the sentence "Bell and assistant Frederick W. "Casey" Baldwin began hydrofoil experimentation in the summer of 1908 as a possible aid to airplane takeoff from water." provide a valid answer to the question "Who helped Bell investigate hydrofoils in 1908?"

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?"

A:
yes