The World Health Organization is working to improve public health worldwide.

The World Trade Organization is an important organization that sets the rules for international trade.

My grandfather used to be a steam locomotive driver.

I commute to work every day using public transportation.

The International Atomic Energy Agency is an international organization that promotes the peaceful use of nuclear energy.

He was promoted to the chief operating officer of the company.

He was appointed as the chief financial officer of our company.

He was appointed as the chief executive officer of the company.

He is the chief technical officer of our company.

He is active as the chief information officer of our company.