Guano is very valuable as a fertilizer.

I heard the beautiful voice of a songbird in the park.

The Imperial Household Agency is an important institution that supports the Japanese Imperial Family.

The vice-chairman helped with the preparation of the meeting.

He missed school due to poor physical health.

He goes to the gym every day to train his longissimus muscle.

Natural language understanding is an important field of artificial intelligence.

The Book of Documents is an ancient Chinese history book and a very important document.

This document, known as a 'jisho', has the Emperor's seal on it.

He reads the gospel every day.