Conversation so far:
When did Robert Mueller start a law career?
1973
What did Robert Mueller do for the firm Pillsbury, Madison and Sutro?
Robert Mueller worked as a litigator at the firm Pillsbury, Madison and Sutro in San Francisco.
What did Robert Mueller do after working as a litigator for Pillsbury, Madison and Sutro?
Robert Mueller then served for 12 years in United States Attorney offices.
What did Rober Mueller do for the US Attorney?
Robert Mueller first worked in the office of the U.S. Attorney for the Northern District of California in San Francisco, where he rose to be chief of the criminal division.
What did Robert Mueller do after San Francisco?
In 1982, Robert Mueller moved to Boston to work in the office of the U.S. Attorney for Massachusetts as an Assistant United States Attorney.

Question: Where did he move after Boston?
Self-contained rewrite: Where did Robert Mueller move after Boston?