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:
the artemision zeus is a greek bronze statue.
answer:
artemision zeus


question:
heybeliada is an island in sea of marmara in turkey.
answer:
heybeliada


question:
pope pius i (; died 154) was an italian priest of the roman catholic church and the 10th pope, the official title is the bishop of rome from 140 until his death in 154.
answer:

pope pius i