WH Clarification is used for explanation or making announcements. It is not a question. Also, WH Clarification is placed in the middle of the sentence.

Because = Why
By = How

How
Where
Why
Who
What
Which
​When

Examples
They happy why? they finish work. 
(They are happy because they are done with work.)

My dog healthy how? Eat fish.
(My dog stays healthy by eating fish.)

I here at restaurant where? Near school. 
(I am here at the restaurant near school.)

Examples
This book name what? Big. 
(This book is called “Big”.)

Bike or car which better? Bike. 
(Which is better, a bike or a car? A bike.)

I video chat with who? My friend.
(I video chat with my friend.)

There have event when? tomorrow.  
(There will be an event tomorrow.)