Physics lab vs Kotyhoroshko

We used to have much laboratory work at the university, and it was quite boring sometimes. Either for our teachers. So once, we were asked by a young one: “Guys, who knows the name of Kotyhoroshko’s sister, will be scored the high grade automatically”! Shame on us, we didn’t take this opportunity, although everybody read that fairy tale in the childhood. And the answer was so obvious: Olenka.

Thanks Kotyhoroshko for the funny reminiscence!