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:
glenn branca (october 6, 1948 – may 13, 2018) was an american avant-garde composer and guitarist.
answer:
glenn branca


question:
giorgio chiellini (born 14 august 1984) is an italian football player.
answer:
giorgio chiellini


question:
the scorpius–centaurus association (sometimes called sco–cen or sco ob2) is a group of stars near the sun.
answer:

scorpius–centaurus association