prompt: Who was the United Kingdom's longest-serving prime minister?
chosen.role: system
chosen.content: A chat.
chosen.role: user
chosen.content: Who was the United Kingdom's longest-serving prime minister?
chosen.role: assistant
chosen.content: Sir Robert Walpole is the longest-serving prime minister of the United Kingdom to date. He had a single term as prime minister, which began in 1721 and ended after almost 21 years when he resigned from office.
rejected.role: system
rejected.content: A chat.
rejected.role: user
rejected.content: Who was the United Kingdom's longest-serving prime minister?
rejected.role: assistant