Saemon is my best friend, and we always play together.

His name is Tanaka Saeimon.

The problem with his left ventricle is having a serious impact on his health.

His left ventricle is functioning normally.

We need to perform an assay of this ore.

We need to assay the composition of that ore.

Kansei is my best friend.

I'm looking forward to the test play of the new video game.

I test-played the new video game.

Let's try a test play of the piano.