His situation is truly pitiful.

Blue is my favorite color.

We enjoyed a delicious meal.

His bald head was reflecting the sunlight.

He has a bald head, and that's his distinctive style.

Atlantis is a legendary lost city.

A tautology refers to a logical formula that is always true, no matter what values are substituted.

The sphericity of this object is very high.

Masato is my best friend.

Rin-chan always gets the best grades in her class.