Task: Sentence Expansion
Input (English): Many people call all sparkling wines " champagne " but according to trade laws , only sparkling wine from the Champagne region can be called champagne .
Output (English): Many people use the term " Champagne " as a generic term for sparkling wine but in some countries , it is illegal to label any product " Champagne " unless it both comes from the Champagne region and is produced under the rules of the appellation .