There is a big tree in the park.

His acting is just like wood.

There are many big trees in the park.

He trains every day with a bokken.

Fir trees beautifully color the winter landscape.

Various colorful shrubs are planted in my garden.

Kimiko is my best friend.

He continues to hone his calligraphy skills.

Mr. Iriki is my best friend.

Understanding the algorithm of the regression tree is difficult.