Given the task definition and input, reply with output. 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: Boxer defeated Republican Bruce Herschensohn Link Information: In 1992, when Cranston retired, Herschensohn won the Republican nomination narrowly, defeating U.S. Representative Tom Campbell, a more moderate Republican who had been on the faculty of Stanford University and who had been elected to Zschau's former Congressional seat. Question: Who did Bruce Herschenohn run against in his primary?
Answer: Tom Campbell,