He is well-informed, so he quickly grasped the core of the problem.

He solved the problem by deciding on his own.

He decided the progress of the project by himself.

He made spaghetti with meatballs.

My nephew plays the cello in a symphony orchestra.

My dream is to perform in a famous orchestra.

She is my second-born daughter.

She had a small piercing in her tragus.

We must not forget the horror of the atomic bomb.

He discussed the dangers of the hydrogen bomb.