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'.

[Q]: Context: He graduated from the Academy of Fine Arts of Vienna in 1880. He studied in the class of professor Christian Griepenkerl Link Information: Christian Griepenkerl (17 March 1839 – 22 March 1916) Question: How old was the professor that Predic studied with in Vienna?
[A]: Answer: 41


[Q]: Context: the Japanese government again dispatched Un'yō in September 1875 under the command of Inoue Yoshika to provoke a military response Link Information: none Question: How long did Yoshika command Un'yō?
[A]: Answer: none


[Q]: Context: The airline was established in 1993 by Mike Brady of Express Airlines I in Atlanta, Georgia. The airline started operations in August 1993. Its route structure in many ways mimiced an unrelated defunct predecessor named Chicago Air which also operated from Chicago Midway's airport less than a decade before. Link Information: The airline was founded as Express Airlines I in 1985  Question: How many years after Chicago Air went defunct was Chicago Express Airlines established?
[A]:
Answer: 1