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: "In what year was the fort that George Armistead commanded during the Battle of Baltimore first built?" whose answer is 1798.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Fort McHenry construction
Useful Output:

Doc 1: Ft. McHenry Tunnel - Part II (Construction). 13K views · 6 years ago more. Melissa Harris. 54. Subscribe. 113. Share. Save.
Doc 2: Ft. McHenry Tunnel - Part I (Construction). 12K views · 6 years ago more. Melissa Harris. 54. Subscribe. 123. Share.
Doc 3: In 1798 construction began to expand upon Fort Whetstone with brick and stone masonry to create a new, more permanent, structure. The new fort
Doc 4: From 1836 to 1839 the Corps of Engineers repaired and renovated Fort McHenry. Over the next ninety years, the fort served various military
Doc 5: Fort McHenry was constructed between 1799 and 1802. It was in the shape of a five-pointed star, which was a popular design during the period.