Question: The Lockheed A-12 was a reconnaissance aircraft built for which United States organization, by Skunk Works, an official pseudonym for Lockheed Martin's Advanced Development Programs (ADP), formerly called Lockheed Advanced Development Projects?
Sentence (from "Lockheed YF-12"): The Lockheed YF-12 was an American prototype interceptor aircraft evaluated by the United States Air Force.
Relevant evidence: No