The Stegosaurus was a type of dinosaur that had large plate-like bones on its back and spikes on its tail.

He is working as a representative of the United Nations.

Have you seen my eraser?

Cold fusion is a part of physics and is a phenomenon that is not yet fully understood.

Research on cold fusion is still controversial.

His mansion is truly magnificent.

He said 'thank you'.

He is studying late into the night to learn a new computer language.

He was diagnosed with schizophrenia.

Fundamental interaction is one of the most important forces in physics.