Does the sentence "The National Security Act of 1947 was signed on on 26 July 1947 by President Harry S Truman, which established the Department of the Air Force, but it was not not until 18 September 1947, when the first secretary of the Air Force, W. Stuart Symington was sworn into office that the Air Force was officially formed." provide a valid answer to the question "Who created the first version of the US Air Force in 1907?"

A: no

Does the sentence "Pitaka contains material often described as systematic expositions of the Gautama Buddha's teachings." provide a valid answer to the question "What contains material ofen described as systematic expositions of the Gautama Buddha teachings?"

A: no

Does the sentence "Like That There", and eventually won the crown on September 4, 2002." provide a valid answer to the question "When did Clarkson win the crown?"

A: yes

Does the sentence "According to Chen, the Ming officer of Hezhou (modern day Linxia) informed the Hongwu Emperor that the general situation in Dbus and Gtsang "was under control," and so he suggested to the emperor that he offer the second Phagmodru ruler, Jamyang Shakya Gyaltsen, an official title." provide a valid answer to the question "Who told the emperor that the situation in Dbus and Gtsang were under control?"

A:
yes