TASK DEFINITION: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
PROBLEM: original question: Who did the [Porcelain Tour]?
answer: matt cardle
answer type: Musical Artist.
auxiliary information: The Porcelain Tour was a 19 date concert tour by Matt Cardle in support of his 2013 album Porcelain. It took place over Ireland and the UK through April 2014, ending in Telford on 25 April.

SOLUTION: The [Porcelain Tour] was held by who?

PROBLEM: original question: What is the hull material of [HMS Prince of Wales]?
answer: steel
answer type: Hull material.
auxiliary information: HMS Prince of Wales was a King George V-class battleship of the Royal Navy, built at the Cammell Laird shipyard in Birkenhead, England. She was involved in several key actions of the Second World War, including the battle of Denmark Strait against the German battleship Bismarck, operations escorting convoys in the Mediterranean, and her final action and sinking in the Pacific in 1941. Prince of Wales first encountered the Germans while being outfitted in her drydock, being attacked and damaged by German aircraft. She was heavily involved in the first contact with the German battleship Bismarck and the cruiser Prinz Eugen, and landed 3 hits on Bismarck including two critical hits, one which caused extensive flooding forward, and another which exploded under Bismarck's armour belt causing machinery damage, the combined effect of both hits caused her to make the ill-fated decision to return to port. Prince of Wales suffered heavy damage during the engagement and had to return to Rosyth to be repaired. Prince of Wales transported Prime Minister Winston Churchill to the Newfoundland Conference with US President Franklin D. Roosevelt.

SOLUTION: What is the hull of the [HMS Prince of Wales] made of?

PROBLEM: original question: what Locomotive is owned by [Amtrak]?
answer: chesapeake
answer type: Locomotive.
auxiliary information: The National Railroad Passenger Corporation, doing business as Amtrak, is a partially government-funded American passenger railroad service. It is operated and managed as a for-profit corporation, and provides medium- and long-distance intercity service in the contiguous United States. Amtrak was founded in 1971 through the government-sponsored consolidation of most of the preexisting passenger rail companies in the United States. Amtrak operates more than 300 trains each day on 21,300 miles of track with select segments having civil operating speeds of 150 mph and connecting more than 500 destinations in 46 states in addition to three Canadian provinces. In fiscal year 2014, Amtrak served 30.9 million passengers and had $2.189 billion in revenue while employing more than 20,000 people. Nearly two-thirds of passengers come from the ten largest metropolitan areas and 83% of passengers travel on routes of 400 miles or less. Its headquarters is at Union Station in Washington, D.C. The name "Amtrak" is a portmanteau of the words "America" and "trak", the latter itself a sensational spelling of "track".

SOLUTION:
What is the name of the Locomotive that is owned by [Amtrak]