structural:expansion, stylistic:style_transfer, structural:reformatting, stylistic:tone, information:extraction
Act 3

An opulent hall in the palace

Guests arrive at the palace for a costume ball. Six princesses are presented to the prince, as candidates for marriage. Rothbart arrives in disguise with his daughter, Odile, who is transformed to look like Odette. Though the princesses try to attract Siegfried with their dances, he has eyes only for Odile. Odette appears at the castle window and attempts to warn him, but he does not see her. He then proclaims to the court that he will marry Odile before Rothbart shows him a magical vision of Odette. Grief-stricken and realizing his mistake (he vowed only to love Odette), he hurries back to the lake.