This grammar rule is using the exclusive form.

Exclusive form of grammar is used to refer to a specific object only.

I eat rice every day.

Close your eyes and take a deep breath.

He buried the treasure in the garden.

Going to the North Pole is my dream.

In this chemical reaction, a specific isotope is produced.

She wrote her name in cursive script.

This sentence is written in bold typeface.

This pathogen is very dangerous to humans.