First, I need to write an original article for the keyword "Billete De 1000 Argentina". The context provided includes snippets about a new banknote, bank account numbers, social media, and recognizing counterfeit bills, but I must use this context only when useful. The requirements specify that the article should be 600-900 words, have natural headings, avoid unsupported claims, and not mention AI generation. Also, I need to return only safe HTML using h2, h3, p, ul, ol, li, strong, and em tags. The user says "Use this context when useful," so I should incorporate relevant parts from the context. The context mentions "El nuevo" which might refer to the new 1000 peso banknote, "cómo reconocer un" which likely means how to recognize a counterfeit, and references to Banco Central and social media. However, I must avoid unsupported claims, so I'll stick to factual information about the banknote. The keyword is "Billete De 1000 Argentina", which means "1000 Argentina Banknote". So, the article should be about the 1000 Argentine peso banknote. I need to cover its features, history, security measures, and how to identify counterfeits. Structure the article with natural headings: - Introduction: What is the billete de 1000 Argentina? - Design and features of the banknote. - Security features to prevent counterfeiting. - How to recognize a genuine 1000 Argentine peso banknote. - Conclusion. Incorporate context where useful. For example, from the context: "El nuevo" could be used to introduce the new design. "Te mostramos cómo reconocer un" can be used in the section about recognizing counterfeits. "El Banco Central de la República" is relevant for information about the issuing authority. But I need to be careful not to include the bank account number or social media links in the article unless it's natural. The context includes social media handles, but I should avoid explicit promotion. Perhaps I can reference that such information is available from official sources. The article must be SEO-friendly, so I'll use the keyword naturally throughout. Word count: 600-900 words. I'll aim for around 750 words. Now, outline the article: - h2: Introducción al Billete de 1000 Argentina - p: Brief history and introduction. - h2: Diseño y Características del Billete de 1000 Pesos - p: Describe the design, colors, images, etc. - h2: Medidas de Seguridad del Billete de 1000 Argentina - p: List security features like watermarks, security thread, etc. - h2: Cómo Reconocer un Billete de 1000 Auténtico - p: Steps to verify authenticity. - h2: El Nuevo Billete de 1000 Pesos - p: Information about new issues if applicable. - h2: Conclusión - p: Summary. I'll use natural headings like that. Since the context includes "FINAL SONG" and links, but I should not include unnecessary content. The article should be informative. Let me write the article in HTML as required. Start with:

Introducción al Billete de 1000 Argentina

El billete de 1000 pesos argentinos es una de las denominaciones más importantes en la economía del país. Emitido por el Banco Central de la República Argentina, este billete ha experimentado diversos cambios en su diseño a lo largo de los años para incorporar mejores medidas de seguridad y reflejar la cultura argentina.

Then, for design:

Diseño y Características del Billete de 1000 Pesos

El anverso del billete de 1000 pesos presenta la imagen de un famoso personaje de la historia argentina, como el hornero, que es el ave nacional. El reverso muestra paisajes emblemáticos del país. El billete tiene un color predominante naranja y rojizo, lo que lo hace fácilmente distinguible.

But I need to be accurate. Actually, the current 1000 peso bill features the hornero on the front, and