Detailed Instructions: 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'.
Problem:Context: His father, Hamilton Fish Kean (18621941), was a United States Senator from New Jersey Link Information: His father, Hamilton Fish Kean (18621941), was a United States Senator from New Jersey Question: How many terms as a senator did Robert Kean's father serve?
Solution:
Answer: a single six-year term