In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
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Question: Question: How many years did it take to develop the Sierra turbo? Passage:The second year of Group A in Australia saw the domination of the JPS Team BMW team fade with several other teams pushing forwards. Most spectacularly was the return of Nissan Motorsport Australia (now under the leadership of former Bathurst winner Fred Gibson) with the newly homologated Nissan Skyline DR30 RS turbo. Led by long time Nissan lead driver George Fury they were the main rival for another new team, the John Sheppard run Volvo Dealer Team, a factory supported team which succeeded the Mark Petch Motorsport Volvo team of 1985. The Touring Car Championship became a two horse race between Volvo's Robbie Francevic and Fury. Fury was never able to haul in Francevic's early points lead and Francevic was crowned champion. Francevic was fired from the Volvo Dealer Team by Sheppard the day after the Castrol 500 at Sandown after refusing to drive what he believed would be an un-competitive car which had only been completed at the meeting started. He then returned to the Mark Petch team as they began development of a Ford Sierra turbo. Although Francevic won the ATCC in the car, 1986 was the last time the Volvo 240T was seen in Australian touring car racing.


Answer: He then returned to the Mark Petch team as they began development of a Ford Sierra turbo


Question: Question: What is the birth date of Mondlane's wife who he married after he earned his Masters? Passage:The fourth of 16 sons of a tribal chief of the Bantu-speaking Tsonga, Mondlane was born in "N'wajahani", district of Mandlakazi in the province of Gaza," in Portuguese East Africa (Mozambique) in 1920. He worked as a shepherd until the age of 12. He attended several different primary schools before enrolling in a Swiss–Presbyterian school near Manjacaze. However, he ended his secondary education in the same organisation's church school at Lemana College at Village above Elim Hospital in the Transvaal (Limpopo Province), South Africa. He then spent one year at the Jan H. Hofmeyr School of Social Work before enrolling in Witwatersrand University in Johannesburg but was expelled from South Africa after only a year, in 1949, following the rise of the Apartheid government. In June 1950 Mondlane entered the University of Lisbon, at Lisbon, the capital of Portugal. By Mondlane's request, he was transferred to the United States, where he entered Oberlin College in Ohio at the age of 31, under a Phelps Stokes scholarship. Mondlane enrolled at Oberlin College in Oberlin, Ohio, in 1951, starting as a junior, and in 1953 he obtained a degree in anthropology and sociology. He continued his studies at Northwestern University in Evanston, Illinois. Mondlane earned an MA and a PhD from Northwestern University and married Janet Rae Johnson, a white American woman from Indiana who then lived in the Chicago suburbs.


Answer: Mondlane earned an MA and a PhD from Northwestern University and married Janet Rae Johnson, a white American woman from Indiana who then lived in the Chicago suburbs


Question: Question: What country was the Polish Legion in when they were surrounded by the Red Army? Passage:After military service in the Imperial Russian Army in World War I, where he reached the rank of a colonel, he joined the 1st Polish Corps of General Józef Dowbor-Muśnicki in western Russia from December 1917 until the Germans forced its dissolution in July 1918. He helped Walerian Czuma organise 1st Kosciuszko regiment at Samara in August 1918 which later formed the 5th Rifle Division in Siberia (sometimes known as the Polish Legion or the Siberian Division) which fought alongside the Czech Legion and the White movement in the Russian Civil War. When the White government of Admiral Aleksandr Kolchak collapsed in December 1919, the Polish Legion joined the general retreat along the Trans-Siberian Railway, until it was surrounded by the Red Army east of Krasnoyarsk in early January 1920. Refusing to surrender, Rumsza led 900 officers and men on an ice march through the taiga slipping through Bolshevik forces until they reached Irkutsk. From there they managed to escape to Harbin in White-controlled Manchuria, and thence to Vladivostok. Rumsza’s force arrived at Gdańsk (Danzig) in Poland in June 1920 and volunteered to fight in the Polish-Soviet War which had just broken out. 


Answer:
When the White government of Admiral Aleksandr Kolchak collapsed in December 1919, the Polish Legion joined the general retreat along the Trans-Siberian Railway, until it was surrounded by the Red Army east of Krasnoyarsk in early January 1920