Provide HTML structure as per spec. We'll need to ensure story length 400-600 words. Let's approximate around 500 words. Need to include headings exactly as indicated: "Hintergruende", "Reaktionen aus dem In- und Ausland", "Ausblick". Use those as heading texts inside

. Actually spec says

Hintergruende

. So heading text is "Hintergruende". We'll then put content under that. Now construct story. We'll start with lede paragraph using the opening tags. Example:

Vor drei Jahrzehnten schoss das Klonschaf Dolly in die öffentliche Wahrnehmung und stellte die Grenzen der Biotechnologie auf den Prüfstand – heute wird das Erbe von Dolly nicht nur in Laboren, sondern auch in politischen Debatten weitergeführt.

That's lede paragraph. Then next heading:

Hintergruende

... content. Then

Reaktionen aus dem In- und Ausland

... content. Then

Ausblick

... content. Then disclaimer. Make sure we use fictional sources inside. Now story length: We'll write about 500 words. Let's approximate. We'll write paragraphs under each heading. Now