A man, sitting by his computer, playing guitar to his cat.
a guy is playing an instrument.
a guy is playing a sax.
All 30 rooms are ordered haphazardly without any care for their historical chronology.
The man is ringing the bell
She is a very polite lady.
A young man climbs a mountain with a backpack strapped to him.
Acting as though I'd noticed nothing, and hoping for the best, was the only thing to do.
People are sitting on a bench.