Fill in the response. Dialog:
Speaker X) Who is Mykola Rudenko?;
Speaker Y) Mykola Rudenko Mykola Danylovych Rudenko (; 12 December 1920, Yuryivka, Donetsk Governorate, Ukrainian SSR – 1 April 2004, Kiev) was a Ukrainian poet, writer, philosopher, Soviet dissident, human rights activist and World War II veteran.;
Speaker X) What happened in the 70s?;
Speaker Y) He was the founder of the Ukrainian Helsinki group, and was twice arrested for his dissident activities.;
Speaker X) Are there any other interesting aspects about this article?;
Speaker Y) Rudenko was seven years old when his father died in a mining accident.;
Speaker X) What happened after that?;
Speaker Y) 
With his mother and two siblings, he worked on the family farm until they were forced to give their land during the process of collectivization.