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: grand-corent is a commune.

SOLUTION: grand-corent

PROBLEM: rsgc1 is a massive young open star cluster in the milky way galaxy.

SOLUTION: rsgc1

PROBLEM: english law, also called common law, is the legal system of england and wales.

SOLUTION:
english law