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: ayman al-zawahiri is a former member of islamist organizations which have organised and carried out attacks in north america, asia, africa and the middle east.

Output: ayman al-zawahiri


Input: Consider Input: theoxena scissaria is a species of moth.

Output: theoxena scissaria


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


Output: women's suffrage