<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 the wife of King Louis XVI of France and Queen of France from 1774 to 1793. Marie-Antoinette was tried and convicted of treason and executed by guillotine on October 16, 1793.