این متن به چه زبانی نوشته‌شده است، فارسی یا انگلیسی؟

متن: Then, after dinner, old Breitkopf would open the piano and sing without any voice, and they would lie sunk in arm chairs, trying not to laugh, but always breaking down and laughing, laughing laughing at nothing. 
زبان متن:
انگلیسی