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.

[Q]: habib thiam (21 january 1933 – 26 june 2017) was a senegalese politician.
[A]: habib thiam


[Q]: an electronic book (also called an e-book, ebook or digital book) is a book in digital form.
[A]: e-book


[Q]: radiography is the name for the use of x-rays to see what is happening to parts of the body.
[A]:
radiography