Question: Erika Rosenberg is an author, interpreter and journalist, who wrote a biography about a Sudeten German-born woman who helped to save the lives of how many Jews during World War II?
Context: Anna Poray or Anna Maria Poray-Wybranowska (10 February 1919 – 25 July 2013) was a Polish-Canadian scholar best remembered for her scientific research into the history of Christian Polish rescue efforts during the Holocaust in occupied Poland.  She was a professional librarian with a PhD in political science, and Director of the Polish Library in Montreal, Quebec, Canada.  Poray-Wybranowska published a ground-breaking book entitled "Those Who Risked Their Lives" in 2007, featuring thousands of wartime stories and biographies of heroic individuals who, under the threat of death, helped Jews during World War II.  Some 30,000 of them were murdered by the Nazis for trying to save Jews, wrote Poray. Gilbert Robert Louis Lesage (19 May 1910 – 7 November 1989) was a Quaker charity worker and philanthropist who helped refugees before the Second World War and was responsible clandestinely for saving the lives of many Jews in southern France while working as the head of the Social Department for Aliens under the Vichy regime. "The Forty Days of Musa Dagh" is a 1933 novel by the Austrian-Jewish author Franz Werfel.  Based on the events at Musa Dagh in 1915 during the Armenian Genocide in the Ottoman Empire, the book played a role in organizing the Jewish resistance under Nazi rule.  It was passed from hand to hand in Jewish ghettos in Nazi-occupied Europe, and it became an example and a symbol for the Jewish underground throughout Europe.  The Holocaust scholars Samuel Totten, Paul Bartrop and Steven L. Jacobs underline the importance of the book for many of the ghettos' Jews: "The book was read by many Jews during World War II and was viewed as an allegory of their own situation in the Nazi-established ghettos, and what they might do about it." Erika Rosenberg (born 24 June 1951 in Buenos Aires, Argentina) is an author, interpreter and journalist.  She wrote a biography of Emilie Schindler. Casper ten Boom (18 May 1859 – 10 March 1944) was a Dutch Christian who helped many Jews and resisters escape the Nazis during the Holocaust of World War II.  He is the father of Betsie and Corrie ten Boom, who also aided the Jews and were sent to Ravensbrück concentration camp where Betsie died.  Casper ten Boom died 10 March 1944 at the Scheveningen Prison, ten days after the arrest of the family. Missak Manouchian (Western Armenian: Միսաք Մանուշեան ; ] , 1 September 1906 – 21 February 1944) was a French-Armenian poet and communist activist.  An Armenian Genocide survivor, he moved to France from an orphanage in Lebanon in 1925.  He was active in communist Armenian literary circles.  During World War II, he became the military commissioner of FTP-MOI, a group consisting of European immigrants, including many Jews, in the Paris region which carried out assassinations and bombings of Nazi targets.  According to one author, the Manouchian group was the most active French Resistance group.  Manouchian and many of his comrades were arrested in November 1943 and executed by the Nazis in Fort Mont-Valérien on 21 February 1944.  He is considered a hero of the French Resistance. Emilie Schindler (22 October 1907 – 5 October 2001) was a Sudeten German-born woman who, with her husband Oskar Schindler, helped to save the lives of 1,200 to 1,700 Jews during World War II by employing them in his enamelware and munitions factories, providing them immunity from the Nazis.  She was recognized as Righteous Among the Nations by Israel's Yad Vashem in 1994. Cornelia "Corrie" ten Boom (15 April 1892 – 15 April 1983) was a Dutch watchmaker and Christian who, along with her father and other family members, helped many Jews escape the Nazi Holocaust during World War II.  She was imprisoned for her actions.  Her most famous book, "The Hiding Place", is a biography that recounts the story of her family's efforts, as well as her time spent in a concentration camp. The burning of the Riga synagogues occurred in 1941, during the first days of the World War II Nazi German occupation of the city of Riga, the capital and largest city in the country of Latvia.  Many Jews confined in the synagogues died in the fires, and many other anti-Semitic measures were launched at the same time, ultimately followed by the murder of the vast majority of the Jews of Latvia. Assia Wevill (15 May 1927 – 23 March 1969) was a German-born woman who escaped the Nazis at the beginning of World War II and emigrated to Mandate Palestine, then later the United Kingdom, where she had a relationship with the English poet Ted Hughes.  She killed herself and her four-year-old daughter Alexandra Tatiana Elise (nicknamed "Shura") in a fashion similar to that of Sylvia Plath, well-known writer and Hughes's first wife, who six years earlier had also committed suicide, by use of a gas oven.
Answer: 1,200 to 1,700