Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Q: the long-beaked echidnas make up one of the two genera (genus zaglossus) of echidna.

A: long-beaked echidna
****
Q: the beethoven house (german: beethoven-haus) in bonn, germany, is a memorial site, museum and cultural institution serving various purposes.

A: beethoven house
****
Q: changdeokgung is one of the five grand palaces in south korea.

A:
changdeokgung
****