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: "Back Bay, Boston is one of how many distinct neighborhoods?" whose answer is 23.
Each document should contain about 30 words, and these documents should contain useful information.

Query: how many distinct neighborhoods are there in boston
Useful Output:

Doc 1: These distinct neighborhoods oftentimes have mailing addresses that end in “Boston, MA”, although residents may also use their unique
Doc 2: Boston's biggest neighborhood, Dorchester, is practically a city unto itself (in fact, if it were its own city, it would be the fourth most
Doc 3: Boston Neighborhoods: Allston/Brighton; Back Bay; Brookline & Coolidge Corner; Cambridge; Fenway/Kenmore; Jamaica Plain; Somerville; South End
Doc 4: The city of Boston has designated 23 Neighborhoods in the city. One of the best things about Boston is that all the neighborhoods have different
Doc 5: Historically the city of Boston annexed many of the surrounding towns. These towns are now "neighborhoods" of Boston and are still called their