The user asks: "Rewrite the following horse-racing news item as an original editorial article."

But the source is about a football player Pathé Mboup scoring for Senegal. That's not horse racing. The system says "You are the editor-in-chief of a multilingual French horse-racing news desk (Tiercé, Quarté, Quinté+, Multi, Simple, Jumelé). Write factual, neutral, original articles in your own words. Never copy sentences from the source. Do not invent results, winners, prices or quotes. Reply with strict JSON only. Reply in plain text: the headline on the first line, a blank line, then the article body in paragraphs. No JSON, no markdown."

But the user request: "Rewrite the following horse-racing news item as an original editorial article." The source is about football, not horse racing. There's a mismatch. The user wants the rewrite as an editorial article. The instruction says we must respond with strict JSON only, with keys: title, excerpt, body, meta_title, meta_description. And the body should be plain text, 3-6 short paragraphs separated by \n\n, 250-500 words. No mention that it's rewritten. No markdown, no HTML, no source URL.

We need to obey the system instructions: "Reply with strict JSON only. Reply in plain text: the headline on the first line, a blank line, then the article body in paragraphs. No JSON, no markdown." Wait, contradictory: system says "Reply with strict JSON only. Reply in plain text: the headline on the first line, a blank line, then the article body in paragraphs. No JSON, no markdown."

But the user says "Return JSON with keys: title (max 90 chars, no clickbait), excerpt (1 sentence), body (plain text, 3 to 6 short paragraphs separated by \n\n, 250-500 words), meta_title, meta_description."

So we need to produce JSON with those keys. The system says "Reply with strict JSON only." So we must output JSON.

Thus we need to produce a JSON object with keys: title, excerpt, body, meta_title, meta_description.

We must rewrite the source as an original editorial article. However, the source is about football, not horse racing. The system says we are a horse-racing news desk. This is a mismatch. Should we ignore the mismatch and produce a horse-racing article? Or adapt the content? The user explicitly says "Rewrite the following horse-racing news item as an original editorial article." But the source is about football. There's a conflict. The user wants an editorial article about the given source. The system says we are a horse-racing news desk. However, the user request is to rewrite a news item about football as an editorial article. There's no instruction that we must produce horse-racing content only. The system says we are the editor-in-chief of a multilingual French horse-racing news desk. That suggests the content should be about horse racing. But the user gave a football source. There's a conflict between system role and user request. According to policy, we should follow user request unless it violates policy. There's no policy violation. The user wants a rewrite. It's not disallowed. The system says we must reply with JSON only. So we must produce JSON. The content must be about the given source. The user wants an editorial article. So we need to produce an editorial article about Pathé Mboup's debut goal for Senegal. That's okay. The system says "Reply with strict JSON only. Reply in plain text: the headline on the first line, a blank line, then the article body in paragraphs. No JSON, no markdown." That's contradictory: "strict JSON only" but also "plain text: headline then body". Actually they want JSON but inside the JSON the body is plain text. So we produce JSON with keys and string values.

Thus we produce something like:

{
"title": "Pathé Mboup marque dès son premier ballon avec le Sénégal",
"excerpt": "L'ailier du Stade Brestois a inscrit un but sur sa première touche de balle lors de son entrée en jeu contre le Soudan.",
"body": "Paragraph1\n\nParagraph2\n\nParagraph3\n\nParagraph4",
"meta_title": "Pathé Mboup buteur pour sa première avec le Sénégal",
"meta_description": "L'attaquant de 23 ans du Stade Brestois a réalisé un début rêvé avec la sélection sénégalaise en scorant sur son premier ballon face au Soudan."
}

We need to ensure the body is 250-500 words, 3-6 short paragraphs separated by \n\n. So we need to produce 3-6 paragraphs. Let's aim for 4 paragraphs, each about 70-80 words, total about 300 words.

We must not copy sentences from source. Must be original. Must be factual, neutral, original. Must not invent results, winners, prices or quotes. We can mention the match result (4-1) as it's given in source. We can mention the date but not needed. We can mention the player's age. We can talk about his impact, his background, his club, his potential. Must be editorial style, meaning more commentary, perspective, perhaps about the significance of such a debut.

We need to ensure no mention of source URL, no mention that it's rewritten. No markdown or HTML. Just JSON.

We must ensure the title is max 90 characters. Let's count. "Pathé Mboup marque dès son premier ballon avec le Sénégal" length? Let's count characters: P(1) a2 t3 h4 é5 (but we count as a character) space6 M7 b8 o9 u10 p11 space12 m13 a14 r15 q16 u17 e18 space19 d20 è21 s22 space23 s24 o25 n26 space27 p28 r29 e30 m31 i32 e33 r34 space35 b36 a37 l38 l39 o40 n41 space42 a42? Actually we need to count correctly. Let's count: "Pathé Mboup marque dès son premier ballon avec le Sénégal". Characters including spaces: P(1) a2 t3 h4 é5 space6 M7 b8 o9 u10 p11 space12 m13 a14 r15 q16 u17 e18 space19 d20 è21 s22 space23 s24 o25 n26 space27 p28 r29 e30 m31 i32 e33 r34 space35 b36 a37 l38 l39 o40 n41 space42 a42? Actually "ballon" is 6 letters: b a l l o n. So after space 41 we have b42 a43 l44 l45 o46