In this task, you're given a statement, 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'.

Context: following the sending of HNLMS Sumatra to Shanghai Link Information: Sumatra was built by the Nederlandsche Scheepsbouw Maatschappij in Amsterdam. She was laid down on 15 July 1916 and launched on 29 December 1920 by Queen Wilhelmina of the Netherlands.
Question: What year was construction started on the ship that was sent to Shanghai?
Answer: 1916