I used pentane in a chemistry experiment.

He likes to write short stories.

He strummed the shamisen akin to 'penpen'.

I drew a picture using a penpen.

We will use pentane in this chemistry experiment.

I will work using this laptop.

This fragment appears to be part of an old mural.

He is majoring in chemistry at university.

We conducted a new experiment in science class.

Mom gave my little brother a spanking because he was naughty.