Question: What is the type of tree described in a diary that was given to Otto Frank?
Context: Anne Frank: The Whole Story is a two-part mini-series based on the book "" by Melissa Müller.  The mini-series aired on ABC on May 20 and 21, 2001.  The series starred Ben Kingsley, Brenda Blethyn, Hannah Taylor-Gordon, and Lili Taylor.  Controversially, but in keeping with the claim made by Melissa Müller, the series asserts that the anonymous betrayer of the Frank family was the office cleaner, when in fact the betrayer's identity has never been established.  A disagreement between the producers of the mini-series and the Anne Frank Foundation about validity of this and other details led to the withdrawal of their endorsement of the dramatization, which prevented the use of any quotations from the writings of Anne Frank appearing within the production.  Hannah Taylor-Gordon received both Golden Globe and Emmy Award nominations for her performance as Anne Frank, while Ben Kingsley won a Screen Actors Guild Award for his performance as Otto Frank, Anne's father.  It is revealed in the miniseries that the cleaning lady of Opekta betrayed Anne and her family. Margot Betti Frank (February 16, 1926 – February 1945) was the eldest daughter of Otto Frank and Edith Frank and the older sister of Anne Frank.  Margot's deportation order from the Gestapo hastened the Frank family into hiding.  According to the diary of her younger sister, Anne, Margot kept a diary of her own, but no trace of Margot's diary has ever been found.  She died in Bergen-Belsen. Hermine Santruschitz (15 February 1909 – 11 January 2010), better known as Miep Gies (] ), was one of the Dutch citizens who hid Anne Frank, her family (Otto Frank, Margot Frank, Edith Frank-Holländer) and four other Jews (Fritz Pfeffer, Hermann van Pels, Auguste van Pels, Peter van Pels) from the Nazis in an annex above Anne's father's business premises during World War II.  She was Austrian by birth, but in 1920, at the age of eleven, she was taken in as a foster child by a Dutch family to whom she became very attached.  Although she was initially only to stay for six months, this stay was extended to one year because of frail health, after which she chose to remain with them, living the rest of her life in the Netherlands. The Diary of a Young Girl, also known as The Diary of Anne Frank, is a book of the writings from the Dutch language diary kept by Anne Frank while she was in hiding for two years with her family during the Nazi occupation of the Netherlands.  The family was apprehended in 1944, and Anne Frank died of typhus in the Bergen-Belsen concentration camp in 1945.  The diary was retrieved by Miep Gies, who gave it to Anne's father, Otto Frank, the family's only known survivor, just after the war was over.  The diary has since been published in more than 60 languages. Opekta, also known as Gies & Co., was a European pectin and spice company that existed between 1928 and 1995.  It is notable for its Dutch operation being based in the building at "Prinsengracht 263 " that would later become the Anne Frank House.  Opekta started in Germany, and later expanded into the Netherlands in 1933, at which time Otto Frank moved from Germany to Amsterdam to become managing director of the new Dutch operation.  Otto Frank was in charge of the manufacturing and distribution of the pectin-based gelling preparations, to be used in jam making.  The company continued to trade from the same building whilst Otto Frank, his family (including his youngest daughter Anne Frank) and several other Jews hid from persecution stemming from the Nazi Occupation of the Netherlands during World War II. The Anne Frank tree (Dutch: Anne Frankboom or, incorrectly, "Anne Frank boom") was a horse-chestnut tree ("Aesculus hippocastanum") in the city center of Amsterdam that was featured in Anne Frank's "The Diary of a Young Girl".  Anne Frank described the tree from The Annexe, the building where she and her family were hiding from the Nazis during World War II. The Short Life of Anne Frank (Dutch: "Het Korte Leven van Anne Frank" ) is a 2001 Dutch television documentary film about the life of diarist Anne Frank.  It was directed by Gerrit Netten.  The film was narrated by several actors, including Jeremy Irons, Joachim Krol, and Bram Bart.  Thekla Reuten and Nicky Mark Morris provided voices for Anne Frank.  The film includes the only known footage of Anne Frank (taken in 1941), a video of Otto Frank in English (taken in the 1960s), and some pages from the original diary of Anne Frank are also videoed in the film. Aaron Zebede is a Panamanian stage actor, director, and producer.  As an actor his earlier work includes the role of 'Alfred P. Doolitle' in My Fair Lady (2003), 'Perón' in "Evita" (2004) and 'Tevye' in "Fiddler on the Roof" (a role he played in two different productions), 'Otto Frank' in "The Diary of Anne Frank and 'Toddy' in the musical "Victor Victoria". Chrysophyllum albidum (commonly known as white star apple) is a forest fruit tree described by the Scottish botanist George Don.  It is commonly found throughout tropical Africa. Otto Frank was born into a Jewish family.  He was the second son of Alice Betty (née Stern) and Michael Frank.  His elder brother was Robert Frank, and younger siblings were Herbert Frank and Helene (Leni) Frank.  Otto was a cousin of the well-known furniture designer
Answer: horse-chestnut tree ("Aesculus hippocastanum")