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: "when belgium declared its independence in 1830 it broke away from ___ control?" whose answer is Dutch.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Belgium independence 1830 controlling entity
Useful Output:

Doc 1: Following a revolution against rule from the Netherlands, a provisional government in Belgium declared its independence on 4 October 1830.
Doc 2: The Dumb Girl of Portici in La Monnaie opera house in Brussels, riots broke out against the Dutch rulers, a conflict that directly led to Belgian independence.
Doc 3: In 1830, Belgium wrested its independence from the Dutch as a result of an uprising of the Belgian people. A constitutional monarchy was established in 1831,
Doc 4: The great powers of the time recognised the secession of Belgium from the (Northern) Netherlands. Leopold I of Saxe-Coburg became the first King of the Belgians
Doc 5:  control because of the actions of the Dutch, not their southern subjects. Eventually, with the backing of the concert of Europe, Belgium