He went to the library to investigate the incident.

This cosmetic comes with a sample of the latest lotion.

This is a sample of my new project.

My father is a doctor.

Your cooperation is needed for this project.

I need you.

I go jogging every day.

In this ancient document, the word 'urine' is used.

The doctor recommended a urine test to examine my urine.

In ancient Japan, urine was used as part of medical treatment.