You will be given a definition of a task first, then some input of the task.
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: His relatives from his mother's side included the Harvard astronomer E.C. Pickering while other distant relatives included Senator J.M. Link Information: Pickering taught physics at the Massachusetts Institute of Technology. Later, he served as director of Harvard College Observatory from 1877 to his death in 1919 Question: When did EC Pickering start working at Harvard?
Output:
Answer: 1877