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]: in egyptain mythology sopdet was the goddess of the star sothis.
[A]: sopdet


[Q]: language death is when a language stops being used as a first language (also called mother language or native language) and as a second language, which it then becomes an extinct language.
[A]: language death


[Q]: the capital of shamkir rayon is shamkir city.
[A]:
shamkir rayon