Simplify the following text for a Grade 7 native English-speaking person.
Original: The Tsar , the empress and two menservants were killed in the first episode of gunfire ; Marie , Dr Botkin and the empress ' maid Demidova were wounded .
Simplified: The Tsar , the empress , and two servants were killed in the first round of shooting . Maria , Dr. Botkin and Alexandra 's maid Demidova were hurt .