We discussed world peace at the summit.

The interface of this computer is easy to use.

A sea cow is a very large aquatic mammal.

The babirusa is a unique animal that lives in Indonesia.

The babirusa is a rare animal native to Indonesia.

He proposed a change of title for the book.

He proposed to change the title of the book.

That monster cat was terrifying the town at night.

She had been nursing her father for a long time.

He threw the sea anchor to stabilize the ship.