Question: What is the date of death of Helga Zepp-Larouche's husband?
Sentence (from "Helga Zepp-LaRouche"): Helga Zepp-LaRouche (born 25 August 1948, in Trier) is a German political activist, widow of the late American political activist Lyndon LaRouche, and founder of the LaRouche movement's Schiller Institute and the German "Bürgerrechtsbewegung Solidarität" party ("BüSo")
Relevant evidence: Yes