Original sentence: He also stated that he believed Ethel Rosenberg was aware of her husband's deeds, but took no part in them..  In a subsequent letter to the New York Times, Sobell denied that he knew anything about Julius Rosenberg's alleged atomic espionage activities – that the only thing he knew for sure was what he (Sobell) did with Julius Rosenberg
Edited sentence: He also stated that he believed Ethel Rosenberg was aware of her husband's misdeeds, but took no part in them..  In a subsequent letter to the New York Times, Sobell denied that he knew anything about Julius Rosenberg's alleged atomic espionage activities – that the only thing he knew for sure was what he (Sobell) did with Julius Rosenberg