The late autumn wind is rustling the leaves of the trees.

His words were profound.

He was so profound that it was difficult for us to understand his thoughts.

He is thought to be a greedy person.

His actions are said to be deeply sinful.

I went to see a movie by myself.

Watching a movie alone is enjoyable.

He is a famous art dealer, collecting artworks from all over the world.

Natural language understanding is an important field of artificial intelligence.

That person is my friend.