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.
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Question: the african golden cat ("profelis aurata") is a medium-sized cat.

Answer: african golden cat

Question: lionel scaloni (born 16 may 1978) is an argentine football player.

Answer: lionel scaloni

Question: the national archives of japan (, "dokuritsu gyosei hojin kokuritsu kobunshokan"), also known by the acronym naj, is a japanese public institution which preserves government documents and historical records.

Answer:
national archives of japan