除草剤をまいたら雑草が枯れるまでどのくらいかかりますか？

The user wants pure HTML code (<h2>, <p>, <strong>) without any introduction, conclusion, markdown tags, code block formatting (), or Python. Wait, since the user didn't specify the content, what should the HTML contain? Let's check if there's any implicit context or if we should provide a simple structure. Wait, since the prompt is completely empty in terms of topic ("Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python."), let's provide a generic clean example or a placeholder using those tags, or check previous turns? There are no previous turns. Let's provide a clean snippet using <h2>, <p>, and <strong>.

Wait, let's keep it minimal and strictly matching the tags requested.

<h2>Titre principal</h2>
<p>Ceci est un paragraphe contenant du texte <strong>important</strong> et structuré proprement.</p>

Wait, the user said: "sans balises markdown, sans code, sans balises python." meaning do NOT use markdown code blocks like html ... . Just the raw text of the HTML!

Let's output raw HTML directly: