What is the question "What are the characters ' names in the Scooby-Doo cartoon ?" asking about?
A: human

What is the question "How is carbon dioxide removed from natural gas ?" asking about?
A: description

What is the question "Where was the first restaurant ?" asking about?
A: location

What is the question "Who invented the Moog Synthesizer ?" asking about?
A:
human