Ill. put the articles: 1. astana is capital of kazakhstan 2. they have son and daughter. 3. lake baikal is deepest lake in world. 4. irish sea is between great britain and ireland. 5. they are highest mountains in world.

Astana is the capital of Kazakhstan.
They have a son and a daughter.
Lake Baikal is the deepest lake in the world.
The Irish Sea is between Great Britain and Ireland.
They are the highest mountains in the world.