Simplify the following text for a Grade 11 native English-speaking person.
Original: These people were Maxim Grigoyev , Tatiana Sitnikova and her son Fyodor Sitnikov , Ivan Kuklin and Matrina Kuklina , Vassily Ryabov , Ustinya Varankina , and Dr. Pavel Utkin .
Simplified: These witnesses were Maxim Grigoyev , Tatiana Sitnikova and her son Fyodor Sitnikov , Ivan Kuklin and Matrina Kuklina , Vassily Ryabov , Ustinya Varankina , and Dr. Pavel Utkin , a physician who treated the girl after the incident .