Read the passage carefully then answer the questions below.

Once upon a time, there was a girl called Cinderella who did all the work in the kitchen while her lazy sisters did nothing. One night her sisters went to a festival at the palace. Cinderella was left at home, feeling very sad. After a time a fairy appeared and told Cinderella that she could go to the festival, but she had to return home by midnight. So she went to the festival in a beautiful dress. She danced with the prince, but at midnight she ran back home, leaving one of her shoes on the dance floor. The prince wanted to see her again and went to every house in the capital until he found that the shoe was the right size for Cinderella. The prince and Cinderella were married and lived happily ever after.

Where did Cinderella’s sisters go one night?