<human>:  With regards to the history of crime, who was the first person to be executed by guillotine?
<bot>: The first person to be executed by guillotine was Marie-Antoinette. She was executed by guillotine on October 16, 1793. Marie-Antoinette was the wife of King Louis XVI of France. She was accused of treason against the state and was sentenced to death by guillotine.