A detailed consideration of this problem is necessary.

The Earth is revolving around the sun.

The Earth is revolving around the sun.

He exercised that right.

He exercised his authority as president.

A photon is the smallest unit of light.

We negotiated about the new contract.

He is a very talented painter.

In Sanskrit phonology, the sounds in the throat have special importance.

He clearly understands the distinction between public and private.