It's difficult to do self-advertisement in an interview.

I get nervous when I self-advertise during interviews.

In statistics, the concept of autocorrelation is very important.

He is learning karate for self-defence.

His variety of pitches is very diverse, which troubles the batters.

This seedless grape is very sweet.

Tanemaru is my best friend.

He obtained a third-class driver's license.

My favorite dog breed is the Siberian Husky.

This bird is a subspecies that only inhabits specific regions.