irrelevance

"His recent lack of focus in class showed a worrying moral failing. "

"Do you want to come with?"

"Attending all your classes is of great importance to your success in school. "

"The weekend is a good time for families to spend time together. "

"The leaky faucet in the kitchen is a problem that needs fixing. "

"The teacher's description of the new math concept helped the students understand it better. "

"The complete survey was handed in to the teacher. "

"He is a student of life."

"The student is solving a math problem. "

"The teacher detailed the steps for solving the math problem. "

"My teacher has a good relationship with all her students. "

"A society where a topic cannot be discussed, does not have free speech."