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.

Ex Input:
the moirai(the fates) were the three goddesses of destiny in greek mythology.

Ex Output:
moirai


Ex Input:
rudolf kargus (born 15 august, 1952) is a former german football player.

Ex Output:
rudolf kargus


Ex Input:
jiichiro date (伊達 治一郎, date jiichiro, january 6, 1952 – 20 february 2018) was a japanese freestyle wrestler.

Ex Output:

jiichiro date