Task: Explanation
Input (English): Schindler's List is a 1993 American epic historical period drama film directed and co-produced by Steven Spielberg and scripted by Steven Zaillian. It is based on the novel "Schindler's Ark" by Australian novelist Thomas Keneally. The film relates a period in the life of Oskar Schindler, an ethnic German businessman, during which he saved the lives of more than a thousand mostly Polish-Jewish refugees from the Holocaust by employing them in his factories during World War II. It stars Liam Neeson as Schindler, Ralph Fiennes as SS officer Amon Göth, and Ben Kingsley as Schindler's Jewish accountant Itzhak Stern. Question: Who produced the movie based on the novel "Schindler's Ark" by Australian novelist Thomas Keneally with screenplay by Steven Ernest Bernard Zaillian? Answer: Steven Spielberg
Output (English):  It is based on the novel Schindlers Ark by Australian novelist Thomas Keneally.