You will be given a definition of a task first, then some input of the task.
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 peak of rail freight came during World War II, when New York industries, including the Brooklyn Navy Yard, worked around the clock to support the war effort. After the war, the Interstate Highway System was built, along with many inland waterways, both competing with the railroads. The rail industry went through widespread consolidations and bankruptcies. Containerization revolutionized shipping. The Port Authority developed the Port Newark-Elizabeth Marine Terminal on Newark Bay. Piers in Brooklyin and Manhattan declined in usage and were abandoned. The 1980 Staggers Rail Act largely deregulated the U.S. railroads. The railroads de-emphasized "retail" railroadingmovement of one or a few rail cars from a shipper's siding to a destination sidingin favor of long unit trains for bulk commodities, such as coal and ore. General cargo shifted to intermodal movement, first trailers on flat cars (TOFC), intermodal containers on flat cars (COFC), and then double-stacked containers, loaded on special well cars. Much manufacturing shifted to Asia, particularly Japan and China, leading to a sharp increase in international container movements.
Link Information: The solution was the 1921 creation of the Port Authority under the supervision of the governors of the two states. By issuing its own bonds Question: When was the Port Newark-Elizabeth Marine Terminal developed?
Output:
Answer: 1921