He was paying attention to the teacher's talk during the class.

He thinks that war is a necessary evil.

This issue requires attention.

His paintings are strongly influenced by expressionism.

Using regular expressions, we search for patterns in strings.

Freedom of expression is one of the fundamental rights of democracy.

In genetics, we study how genes determine the phenotype.

Hate speech has the power to divide society as a whole.

His nature is very kind.

Detailed information is needed to understand the nature of that project.