Simple Present

 b A state

We normally use the present simple for a present state: a feeling, opinion or

relation.

Mr Adams loves Shakespeare.

I think it's a good idea.

Who knows the answer?

https://www.quora.com/Which-one-is-correct-%E2%80%98who-knows%E2%80%99-or-%E2%80%98who-know%E2%80%99

This book belongs to my sister.

Silicon is a chemical element.

York lies on the River Ouse.

NOTE

We use the present simple for permanent states.