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 Q]: ash ketchum (satoshi in japanese) is a character from the "pokémon" anime.
[EX A]: ash ketchum

[EX Q]: the moirai(the fates) were the three goddesses of destiny in greek mythology.
[EX A]: moirai

[EX Q]: year 25 bc was either a common year starting on wednesday, thursday or friday or a leap year starting on wednesday or thursday of the julian calendar.
[EX A]:
25 bc