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.

the sunflower ("helianthus annuus") is a living annual plant in the family asteraceae, with a large flower head ("capitulum").
sunflower

the family computer disk system was a disc add-on for the nintendo entertainment system that was only released in japan despite being announced in america.
family computer disk system

new caledonia (; popular name: "le caillou") is a ""sui generis" collectivity" (in practice an overseas territory) of france, made up of a main island ("grande terre") and several smaller islands.

new caledonia