You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "Zwentibold was a member of a dynasty that was a Frankish noble family with origins in what clans?" whose answer is Arnulfing and Pippinid.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origins of the Carolingian dynasty
Useful Output:

Doc 1: The Carolingian Dynasty was formed from the union of the Pepinid and Arnulfing houses and grew to power during the 8th century in Francia as its
Doc 2: The roots of the Carolingian dynasty may be traced all the way back to Arnulf, the bishop of Metz. Along with Pippin I (known also as Pippin of
Doc 3: The Holy Roman Empire existed in medieval and modern Western and Central Europe, founded by Charlemagne, of the Frankish Carolingian dynasty.
Doc 4: The Carolingian Dynasty ruled the Franks, a Germanic tribe, in Western Europe for about 200 years, from AD 751 to 987.
Doc 5: Carolingian dynasty (750–887 CE), family of Frankish aristocrats and the dynasty that they established to rule western Europe.