You will be given a definition of a task first, then some input of the task.
In this task, you're given a passage, 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'.

Passage: Born on January 10, 1933, in New York City, New York, Duffy received an Artium Baccalaureus degree from Fordham University in 1954 and a Bachelor of Laws from the Fordham University School of Law in 1958. He clerked for Judge J. Edward Lumbard at the United States Court of Appeals for the Second Circuit (19551958). Duffy served as an Assistant United States Attorney (19581959) and assistant chief of the Criminal Division (19591961) at the office of the United States Attorney for the Southern District of New York before going into private practice as an associate with the New York City firm Whitman, Ransom & Coulson (19611966). He later became a partner with Gordon & Gordon (19661969). Duffy later appointed New York regional administrator of the Securities and Exchange Commission office (19691972). His tenure as Regional Administrator of the United States Securities and Exchange Commission was in a time of turmoil in Wall Street. He is viewed by many as having been the first proponent within the Commission of what eventually became Securities Investor Protection Corporation or SIPC.
Link Information: none Question: Who was head of the DOJ during Duffy's service as an Assistant United States Attorney?
Output:
Answer: none