I saw a sign of illness from his complexion.

The dog is barking.

I heard the cry of a bird in the park.

It would be nice if it's sunny tomorrow.

I saw a bird in the park.

The bird's song is considered an omen of good fortune or happiness.

He saw that sign and felt that something good was going to happen.

Sho is my best friend.

The meaning of the name 'Sho' is auspiciousness, which means good luck.

This is a very good book.