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:
plumbaginaceae is a family of flowering plants are about 560 species in 10 genera found all over the world.
answer:
plumbaginaceae


question:
hiragana are part of the japanese writing system.
answer:
hiragana


question:
ya'akov nehoshtan (hebrew: יעקב נחושתן‎; 22 april 1925 – 17 april 2019) was an israeli politician, diplomat and lawyer.
answer:

ya'akov nehoshtan