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: they would be met by 15,000 troops sent down from Major General William T. Sherman's forces Link Information: He married Ellen Ewing Sherman and together they raised eight children. Question: How many times was the person who sent 15,000 troops married?
Answer: 1