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.

Ex Input:
alphonse laveran (charles louis alphonse laveran, 18 june 1845 – 18 may 1922) was a french military doctor.

Ex Output:
alphonse laveran


Ex Input:
panampatta is a village situated near pathanapuram in kollam district, kerala state, india.

Ex Output:
panampatta


Ex Input:
the halberd is a two handed pole weapon that has a axe blade topped with a spike mounted on a long shaft and a hook or thorn on the back side of the axe blade.

Ex Output:

halberd