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.

His new work is very moving.

This year's crop was very abundant.

He was cutting down a tree.

There are many trees standing straight in that park.