TASK DEFINITION: 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.
PROBLEM: central plaza is a skyscraper in hong kong.

SOLUTION: central plaza

PROBLEM: women's suffrage is the right of women to vote and to be elected to an office.

SOLUTION: women's suffrage

PROBLEM: gallenkirch is a former municipality of the district brugg in canton of aargau in switzerland.

SOLUTION:
gallenkirch