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 does Plum Island Light built which has the same design as Great Captain Island Lighthouse?" whose answer is 1869.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was plum island light built
Useful Output:

Doc 1: The original Plum Island Lighthouse was built in 1849 and was decommissioned ten years later. The equipment was moved to the newly built, Pilot Island
Doc 2: Built in 1895. Automated in 1969 and remains an active navigational aids to this day. Closed to the public; no tours. Located between Washington Island and
Doc 3: Built 1858, automated 1962. The original light on Plum Island, built in 1848, no longer exists because ship owners and captains complained to the Lighthouse
Doc 4: Original structure built in 1827, rebuilt to include a tower in 1869. PLUM ISLAND (PLUM GUT) LIGHT. LONG ISLAND SOUND/GARDINER'S BAY Station
Doc 5: The first skeletal lighthouses in the United States were three experimental towers built in Michigan in 1861. Two were built on Lake Superior,