That information is unnecessary.

That information is completely unnecessary.

He thinks that war is a necessary evil.

This building is surrounded by firewalls.

His favorite vase is placed in this niche.

I thought his plan was perfect, but in fact there were some flaws.

He said there's no such thing as a perfect human.

This retaining wall is designed to withstand earthquakes.

This mural depicts the history of ancient times.

The walls of this room are painted white.