He belongs to the sales division of the company.

He belongs to the sales division.

This fossil is a part of a silicified tree.

They (referring to women or girls) are my best friends.

What is the imaginary part of this complex number?

What is the real part of this complex number?

He is deeply studying Theravada Buddhism.

There are many historical buildings in the central part of this city.

Mr. Betsube is my best friend.

Mr. Sube is my best friend.