revision preference src: A mysterious stranger bequeaths to Calderon a magic lantern that transforms him into the dashing contender Calano, but questions about his identity put Calderon's possible victory and the love of the beautiful princess in jeopardy. <SEP> tgt: A mysterious stranger bequeaths to Calderon a magic lantern that transforms him into the dashing contender Calano. Questions about Calderon's identity put Calderon's possible victory and the love of the beautiful princess in jeopardy.