How many times have you sung that song?

He has read thousands of books.

What floor is the library on?

How many times have you been to Japan?

He is facing many difficulties due to gender identity disorder.

This company demands uniformity in all projects.

This design has uniformity in color.

This vitamin is water-soluble, so it easily dissolves in water.

This cold is highly contagious, so please be careful with prevention.

Database transactions need to ensure their atomicity.