Does the sentence "Architecture (Latin architectura, from the Greek arkhitekton "architect", from - "chief" and "builder") is both the process and the product of planning, designing, and constructing buildings and other physical structures." provide a valid answer to the question "What structures can be viewed as both works of art and symbols of certain cultures?"

A: no

Does the sentence "One SilkAir flight was diverted and landed in Kunming as a result." provide a valid answer to the question "Why were flights delayed and diverted?"

A: no

Does the sentence "The CIA was first formed under the National Security Act of 1947 from the army's Office of Strategic Services (OSS), which furnished both military intelligence and clandestine military operations to the army during the crisis of World War II." provide a valid answer to the question "Who oversees the operations of the CIA?"

A: no

Does the sentence "The main focus was in the Balkans where the South Slavs had been ruled for centuries by other empires: the Byzantine Empire, Austria-Hungary, the Ottoman Empire, and Venice." provide a valid answer to the question "Where was the main focus of Pan-Slavism?"

A:
yes