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: "The Belfast and Moosehead Lake Railroad operated from 1871 to 2007 over a single track grade from what city in Waldo County, Maine?" whose answer is Belfast.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Belfast and Moosehead Lake Railroad starting city
Useful Output:

Doc 1: RBC: A Day on the Belfast & Moosehead Lake Railroad - July 30th, 2022.
Doc 2: The route went from Belfast to Burnham Junction. Today, this Unity, Maine train ride offers a great way to see the state and experience a piece
Doc 3: A standard gauge railroad from its completion in November 1870, the B&ML was for more than 100 years majority owned by the city of Belfast.
Doc 4: City of Belfast, Me.-Acquisition Exemption-Certain Assets of Belfast and Moosehead Lake Railroad Company · Department of Transportation · Surface
Doc 5: Celebrating over 150 years of railroading, the Belfast and Moosehead Lake Railroad offers some fun weekend trips from their location in Unity.