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: A second expedition, led by Dr. Tom Friend (Forrest Tucker) accompanied by trapper Ed Shelley (Robert Brown) Link Information: Forrest Meredith Tucker (February 12, 1919 October 25, 1986) Question: Which of the actors that played Dr. Tom Friend and Ed Shelley died most recently?
A:
Answer: Robert Brown