He spent time on the revision of the thesis.

This equation has a singularity.

The main problem with this project is the lack of communication.

This sentence is using nomaten.

A part alternation mark is used in these lyrics.

He likes to take a walk in the park at dusk.

The Venus flytrap is a very unusual plant that preys on insects.

He behaved as if possessed by a demon.

For now, please give me a cup of coffee.

He often takes things out of context to steer the conversation in a way that suits him.