Original sentence: Petra Karin Kelly (November 29, 1947 - October 1, 1992), German peace activist and left-wing politician, was born in Günzburg (Germany) in 1947, and lived and studied in the United States between 1959 and 1970
Edited sentence: Petra Karin Kelly (November 29, 1947 - October 1, 1992), untiring worker for a just and peaceful world, was born in Günzburg (Germany) in 1947, and lived and studied in the United States between 1959 and 1970