<human>:  How many people are in the painting, ‘The Death of Marat’ by Jacques-Louis David?
<bot>: There are three people in the painting: Marat, a man, and a woman. The woman is a woman named Charlotte Corday, who is the assassin of Marat. The man is Jean-Paul Marat, who was a revolutionary politician and a leader in the French Revolution. The woman is holding a knife that she used to stab Marat.