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 did canada become independent of the british empire?" whose answer is April 17, 1982.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did canada become independent of the british empire
Useful Output:

Doc 1:  Canada in 1837 and 1838 and the First War of Indian Independence in 1857. But the reactions of the British Empire to these independence
Doc 2: Canada became independent with the Statute of Westminster in 1931, like other similar British dominions such as Australia and New Zealand.
Doc 3: The first was Canada in 1867, then Australia became a dominion in 1901 and South Africa became a dominion in 1910. In terms of size, the British Empire was at
Doc 4: In 1867, the Province of Canada was joined with two other British colonies of New Brunswick and Nova Scotia through Confederation, forming a self-governing
Doc 5: Starting with the 1763 Treaty of Paris, New France, of which the colony of Canada was a part, formally became a part of the British Empire.