He performed a ritual to summon a familiar.

The messenger carried an important message to the king.

This sea area is rich in diversity of benthic organisms.

He corrected my mistake.

He helped me with the correction of my report.

Imperialism is one form of a nation, referring to a system where one monarch rules.

Ilex aquifolium trees are often used for Christmas decorations.

He is my apprentice and is working very hard.

This product is being sold at a fixed price.

This math problem can be solved using Pythagoras' theorem.