The equilibrium length of this spring is 5 centimeters.

He prefers natural foods.

This wood may spontaneously combust if the humidity is high.

His car spontaneously combusted all of a sudden.

Natural rights are rights that humans have from birth.

What time is it now in Alaska Standard Time?

The United Nations Environment Programme is providing solutions to global environmental problems.

This document contains environment-dependent characters.

I want to go to the Tokara Islands.

Natural language processing is a technology that allows computers to understand and analyze human language.