Given the task definition and input, reply with output. 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: In 1909, he was elected as Resident Commissioner of Puerto Rico to U.S. Congress and participated in the creation of the Jones-Shafroth Act. Link Information: The JonesShafroth Act () also known as the Jones Act of Puerto Rico, Jones Law of Puerto Rico, or as the Puerto Rican Federal Relations Act of 1917 was an Act of the United States Congress, signed by President Woodrow Wilson on March 2, 1917 Question: How many years after being elected as a commissioner to the US Congress did Rivera help create the Jones-Shafroth Act?
Answer: 8