P: In 1960 Random House acquired Alfred A. Knopf. It is believed that the decision to sell was prompted by Alfred A. Knopf, Jr., leaving Knopf to found his own book company, Atheneum Books in 1959. Since its founding, Knopf has paid close attention to design and typography, employing notable designers and typographers including William Addison Dwiggins, Harry Ford, Steven Heller, Chip Kidd, Lorraine Louie, Bruce Rogers, Rudolf Ruzicka, and Beatrice Warde. Knopf books conclude with an unnumbered page titled "A Note on the Type", which describes the history of the typeface used for the book. In addition, Knopf books date the year of the book's current printing on the title page. Knopf published textbooks until 1988, when Random House's schools and colleges division was sold to McGraw-Hill. In 1991, Knopf revived the "Everyman's Library" series, originally published in England in the early 20th century. This series consists of classics of world literature in affordable hardcover editions. The series has grown over the years to include lines of Children's Classics and Pocket Poets. Random House was acquired by Bertelsmann in 1998. In late 2008 and early 2009, the Knopf Publishing Group merged with Doubleday to form the Knopf Doubleday Publishing Group. Random House has been owned since its 2013 merger of Penguin Group by Penguin Random House, a joint venture between Bertelsmann and Pearson PLC . Many of Knopf's hardcover books are published later as Vintage paperbacks. Vintage Books is a sister imprint of Random House. In 2015, Knopf celebrated its 100th Anniversary by publishing a commemorative book, Alfred A. Knopf, 1915-2015: A Century of Publishing.
Answer this: How many typographers and designers did Knopf employer over the years?

A: 8

P: Suva Planina is a mountain in southeastern Serbia. It lies between towns of Niska Banja on the northwest and Babusnica on the southeast, with a ridge branching towards Bela Palanka on north. Its earlier name was Kunovica. The highest peak is Trem at 1,810 m, the second highest is Golemo Straziste at 1,714m, and there is also "Litica" at 1,683m southeast side of the mountain. The name stems from the fact that there are only few springs in the whole mountain. Two biggest are Bojanine vode and Rakos cesma . Traces of the Roman military road Via Militaris, connecting Singidunum and Constantinople are still visible across the mountain. As of 2010, Suva planina is undergoing a process of declaration of a special nature preserve. In last weekend in February there is a mountaineering event called "Zimski uspon na Trem" , that gathers over 600 mountaineers from all parts of the Balkans. It is also the biggest Balkan's mountain winter event. It started in 1997 and it is under the organization of Mountaineering club "Zeleznicar" from Nis. The Divna Gorica range is known for the feral horses. They also roam to the other, higher parts of the mountain, above the altitude of 1,600m . The slopes of this mountain are popular with skiing.
Answer this: Which peak is higher, Trem or Golemo Straziste?

A: Trem

P: Following the Mamluk victory over the Mongols in 1260 at the Battle of Ain Jalut by Qutuz and his general Baibars, Qutuz was assassinated, leaving Baibars to claim the sultanate for himself. As Sultan, Baibars proceeded to attack the Christian crusaders at Arsuf, Athlith, Haifa, Safad, Jaffa, Ascalon, and Caesarea. As the Crusader fortress cities fell one by one, the Christians sought help from Europe, but assistance was slow in coming. In 1268 Baibars captured Antioch, thereby destroying the last remnant of the Principality of Antioch, securing the Mamluk northern front and threatening the small Crusader County of Tripoli. Louis IX of France, having already organized a large crusader army with the intent of attacking Egypt, was diverted instead to Tunis, where Louis himself died in 1270. Prince Edward of England arrived in Tunis too late to contribute to the remainder of the crusade in Tunis. Instead, he continued on his way to the Holy Land to assist Bohemund VI, Prince of Antioch and Count of Tripoli, against the Mamluk threat to Tripoli and the remnant of the Kingdom of Jerusalem. On May 9, 1271, Edward finally arrived at Acre. He brought a small but not insignificant contingent of no more than 1,000 men, including 225 knights.
Answer this: How many years after Baibars captured Antioch did Edward arrive at Acre?

A:
3