question: Henry Morgentaler was imprisioned at a concentration camp opened in what year?
answer: 1933
context: Title: Lobor concentration camp
  Passage: The Lobor concentration camp or Loborgrad camp (Croatian: "Koncentracioni logor Lobor" ) was a concentration camp established in Lobor, Independent State of Croatia (modern-day Croatia) in the deserted palace of Keglevich family.  It was established on 9 August 1941, mostly for Serb and Jewish children and women.  The camp was established and operated by Ustaše, with 16 of its guards being members of the local Volksdeutsche community.  Its inmates were subjected to systematic torture, robbery and murder of "undisciplined" individuals.  All younger female inmates of the Lobor camp were subjected to rapes.  More than 2,000 people were inmates of this camp, at least 200 died in it.  All survived children and women were transported to Auschwitz concentration camp in August 1942 where they all were killed.
  Title: Dachau concentration camp
  Passage: Dachau concentration camp (German: "Konzentrationslager (KZ) Dachau" , ] ) was the first of the Nazi concentration camps opened in Germany, intended to hold political prisoners.  It is located on the grounds of an abandoned munitions factory northeast of the medieval town of Dachau, about 16 km northwest of Munich in the state of Bavaria, in southern Germany.  Opened in 1933 by Heinrich Himmler, its purpose was enlarged to include forced labor, and eventually, the imprisonment of Jews, German and Austrian criminals, and eventually foreign nationals from countries that Germany occupied or invaded.  The Dachau camp system grew to include nearly 100 sub-camps, which were mostly work camps or "Arbeitskommandos ", and were located throughout southern Germany and Austria.  The camps were liberated by U.S. forces on 1 May 1945.
  Title: Henry Morgentaler
  Passage: Henekh "Henry" Morgentaler, {'1': ", '2': ", '3': ", '4': "} (March 19, 1923 – May 29, 2013), was a Jewish Polish-born Canadian physician and pro-choice advocate who fought numerous legal battles aimed at expanding abortion rights in Canada.  As a youth during World War II, Morgentaler was imprisoned at the Łódź Ghetto and later at the Dachau concentration camp.
citations: Dachau concentration camp Henry Morgentaler