In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Passage: The Abana was sailing from Liverpool to Savannah, Georgia when she was caught in a storm in the Irish Sea. She was spotted at 3 pm drifting in a northwesterly direction with her sails torn to shreds. The crew mistook Blackpool Tower for a lighthouse and the ship was first spotted foundering at North Pier, and ended up drifting north and was wrecked off Little Bispham at 5 pm. Flares were fired and the lifeboat was called out. The alarm was raised by the landlord of the Cleveleys Hotel. Due to the weather conditions, the Blackpool lifeboat Samuel Fletcher had to be taken some overland to Bispham before it could be launched. The lifeboat had a crew of 16, and the Abana had a crew of 17, all of whom were taken on board along with the ship's dog, which belonged to Captain Danielson. The lifeboat grounded on a sandbank whilst returning to shore, but some of the crew members pushed the boat afloat and they managed to reach shore safely. All were taken to the Red Lion Inn to recover from their ordeal. The ship's bell and dog were given to the landlord of the Cleveleys Hotel, who had raised the alarm.
Link Information:

Two Lancashire architects, James Maxwell and Charles Tuke, designed the tower and oversaw the laying of its foundation stone on 29 September 1891 Question: When was the structure the crew of the Abana mistook for a lighthouse constructed?
Answer: 1891

Passage: Indigenous peoples inhabited Missouri for thousands of years before European exploration and settlement. Archaeological excavations along the rivers have shown continuous habitation for more than 7,000 years. Beginning before 1000 CE, there arose the complex Mississippian culture, whose people created regional political centers at present-day St. Louis and across the Mississippi River at Cahokia, near present-day Collinsville, Illinois. Their large cities included thousands of individual residences, but they are known for their surviving massive earthwork mounds, built for religious, political and social reasons, in platform, ridgetop and conical shapes. Cahokia was the center of a regional trading network that reached from the Great Lakes to the Gulf of Mexico. The civilization declined by 1400 CE, and most descendants left the area long before the arrival of Europeans. St. Louis was at one time known as Mound City by the European Americans, because of the numerous surviving prehistoric mounds, since lost to urban development. The Mississippian culture left mounds throughout the middle Mississippi and Ohio river valleys, extending into the southeast as well as the upper river.
Link Information: earthworks are artificial changes in land level, typically made from piles of artificially placed or sculpted rocks and soil. Question: What are earthwork mounds made of?
Answer: sculpted rocks and soil.

Passage: The city is overlooked by a large museum and national historic site, the Halifax Citadel not far from the province's Natural History Museum. The Maritime Museum of the Atlantic, the oldest and largest maritime museum in Canada explores the cultural and technology of the province's seafaring heritage. Moored beside the Maritime Museum is the museum ship HMCS Sackville, Canada's naval memorial. The city's rich naval history is also presented at the Maritime Command Museum in the city's North End. The Pier 21 Immigration Museum located a former ocean liner immigration shed features Canada's immigration history. Across the harbour, the Dartmouth Heritage Museum preserves the history of the Dartmouth side of the Harbour. The Black Cultural Centre for Nova Scotia in Cherrybrook celebrates the history and culture of African Nova Scotians. A variety of community museums across the municipality showcase community history such as the Fultz House Museum in Sackville and the Musquodoboit Railway Museum in Musquodoboit Harbour. Two aviation museums are located in Halifax; the Atlantic Aviation Museum near the Halifax International Airport and the Shearwater Aviation Museum in Eastern Passage.
Link Information: The ship was transferred to the Canadian Naval Corvette Trust (now the Canadian Naval Memorial Trust) on 28 October 1983 Question: When was the museum ship in Halifax first opened?
Answer: 1983