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: "Do Il mondo della luna and Dalibor both have connections to German opera?" whose answer is yes.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of Il mondo della luna opera
Useful Output:

Doc 1: The story centres on aspiring space cadet Buonafede, his daughters Clarice and Flaminia, and his bogus astronomer, Ecclitico. While the miserly
Doc 2: “Il mondo della luna” – a humorous, classic opera buffa in three acts with music by Franz Joseph Haydn and a libretto by Carl Goldoni is the
Doc 3: Musical and musicological considerations aside, “Il Mondo Della Luna” has the advantage of a libretto adapted from Goldoni, creator of the
Doc 4: Oxford's own chamber-opera company fused simplicity with ingenuity to bring new life to Haydn's lunar-themed comic opera in the sparkling
Doc 5: Rich, old skinflint Buonafede wants to 'save' his daughter Clarice from marriage to 'protect' her dowry. Clarice's wooer Eclittico, a would-be