Please answer the following question: - caption is thomas with his dog sophie . - birth name is william thomas hallenback , jr. & nbsp ; - death cause is pulmonary disease - death date is 23 january 2009 - spouse is ellen benjamin - birth date is 20 march 1947 - image is williamthomas.jpg - birth place is tarrytown , new york , united states - occupation is anti-nuclear activist Given the details above, guess who could this information be about.
Answer:
thomas -lrb- activist -rrb-