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: "Which opera has more acts, Mireille or Der Zwerg?" whose answer is Mireille.
Each document should contain about 30 words, and these documents should contain useful information.

Query: number of acts in opera Mireille
Useful Output:

Doc 1: Mireille: An Opera in Three Acts. Eligible for Cash on Delivery. Free Delivery Available. Non-Returnable. Many ways to pay.
Doc 2: In Act Two, Mireille and Vincent (soprano Inva Mula and tenor Charles Castronovo) sing the "Song of Magali," a love song inspired by Provencal folklore.
Doc 3: Charles GOUNOD (1818-1893) Mireille - Opera in five acts and seven tableaux (1864) Mireille - Inva Mula (soprano); Vincent - Charles Castronovo (tenor);
Doc 4: Mireille is an 1864 opera in five acts by Charles Gounod to a French libretto by Michel Carré after Frédéric Mistral's poem Mirèio.
Doc 5: Original work: Charles Gounod (1818-93), Mireille , opera in five acts, libretto by Michel Carré after Frédéric Mistral, first played at the Théâtre-Lyrique