Back To The Future Vintage Poster T-Shirt in Dutch would be: "Back To The Future Vintage Poster T-Shirt" but we must preserve product names and titles exactly as written. The instruction says do not translate product names, titles, brand names, model numbers, or other proper nouns — keep them exactly as written. The user provided: "Back To The Future Vintage Poster T-Shirt" That's a product title; we should keep it unchanged. But the user asked to translate. However developer instruction overrides user: do not translate proper nouns. So output should be exactly the same text, translated? Wait conflict: We should translate English to Dutch while preserving line breaks and paragraph structure, but not translate proper nouns. The entire input is a product title, which is a proper noun/title. So we should keep as is. The instruction says return only the translated text, with no quotes. Since we cannot translate, we output the same string: Back To The Future Vintage Poster T-Shirt But it asks preserve line breaks. There's none else. So final: Back To The Future Vintage Poster T-Shirt