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.

Input: Consider Input: malva is a genus of about 25-30 species of plants commonly called mallows.

Output: malva


Input: Consider Input: ligny-sur-canche is a commune.

Output: ligny-sur-canche


Input: Consider Input: the thai wikipedia is the thai-language edition of wikipedia.


Output: thai wikipedia