He is known as an oil baron.

I received a personal reproof from the department manager.

He found a rough gemstone and was very happy.

He is a famous jeweler.

Real analysis is a branch of mathematics that studies the properties of real numbers and the functions on them.

This wristwatch uses quartz.

She planted a pomegranate tree in the garden.

I am solving integration problems in math class.

His height is taller than mine.

His success is a matter of sooner or later.