instruction:
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.
question:
he is more often called davy crockett.
answer:
davy crockett

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

question:
harsha or harshavardhana or "harsha vardhan" (590647) was an indian buddhist emperor.
answer:
harsha