Given the question: Generate a question that has the following answer: Sakura and Kero are contacted by Eriol from England. for the following movie plot: Eriol Hiiragizawa's house is demolished to make way for a new amusement park in Tomoeda, activating a Clow Card, The Nothing, hidden underneath the house. After the park is built, she hides in its clock tower and begins secretly stealing the other cards from their mistress Sakura Kinomoto. Sakura faces her own challenges, having the leading role in a play her school is putting on as part of Tomoeda's annual festival, and her own feelings towards her friend Syaoran Li, who confessed to her before returning to Hong Kong. Sakura and her best friend Tomoyo Daidoji visit the amusement park, where Sakura senses a magical aura. Running into the park, she bumps into Syaoran and Meiling Li who returned for a visit, though Tomoyo and Meiling planned it to get Sakura to confess to Syaoran. Tomoyo and Meiling make a hasty departure, leaving Sakura to invite Syaoran to dinner. She tries to confess but she is repeatedly interrupted by the Clow Cards guarding Kero and then the arrival of her brother Toya and his friend Yukito Tsukishiro. The next couple of days involve Sakura and her friends rehearsing the play and Sakura repeatedly attempts to confess to Syaoran but is interrupted. They also notice that things in the city are disappearing including a bridge in the local park. Sakura, Syaoran, Tomoyo and Meiling spend a day at the amusement park, with Sakura and Syaoran ending up on a Ferris wheel together where Sakura tries to confess again. However, both witness one of the Clow Cards vanishing and chase its aura to a hall of mirrors where they encounter the Nothing who steals several more cards. Sakura and Kero are contacted by Eriol from England, who explains the Nothing was created to counter the positive magic of the Clow Cards with her own negative magic. The Nothing was released due to Sakura changing the cards' power from Clow Reed's to her own, and every time the Nothing steals a card, her power erases part of Tomoeda. Eriol warns Sakura that when she seals the card, her greatest feeling at the time, namely her...
The answer is:
who are you contacted by Eriol from England?