Definition: 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'.
Input: Context: Some time later, due to his good fluency in English, he was placed in the press office of Kaulza de Arriaga, the commander in chief of the Portuguese Armed Forces in Mozambique, who had coordinated a massive anti-guerrilla operation against FRELIMO separatists in 1970 - the Gordian Knot Operation. Link Information: Kaulza de Oliveira de Arriaga, , , , (18 January 1915 2 February 2004) Question: How old was the commander in chief when he coordinated a massive anti-guerrilla operation?
Output:
Answer: 55