input: Please answer the following: Extract the answer to the question from the following context. Question: When was the Central Artery replaced? Context: Downtown Boston's streets grew organically, so they do not form a planned grid, unlike those in later-developed Back Bay, East Boston, the South End, and South Boston. Boston is the eastern terminus of I-90, which in Massachusetts runs along the Massachusetts Turnpike. The elevated portion of the Central Artery, which carried most of the through traffic in downtown Boston, was replaced with the O'Neill Tunnel during the Big Dig, substantially completed in early 2006.
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output: 2006


input: Please answer the following: Extract the answer to the question from the following context. Question: What is the first religious festival mentioned that contains two words? Context: Religious festivals include Diwali (the festival of light), Maha Shivaratri, Teej, Guru Nanak Jayanti, Baisakhi, Durga Puja, Holi, Lohri, Eid ul-Fitr, Eid ul-Adha, Christmas, Chhath Puja and Mahavir Jayanti. The Qutub Festival is a cultural event during which performances of musicians and dancers from all over India are showcased at night, with the Qutub Minar as the chosen backdrop of the event. Other events such as Kite Flying Festival, International Mango Festival and Vasant Panchami (the Spring Festival) are held every year in Delhi.
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output: Maha Shivaratri


input: Please answer the following: Extract the answer to the question from the following context. Question: If a class is a set, what can it not be? Context: The second approach to the problem took as its base the notion of class, and defines a set as a class which belongs to other classes, while a proper class is defined as a class which does not belong to other classes. Under the Zermelo–Fraenkel approach, the axioms impede the construction of a set of all sets which do not belong to themselves. In contrast, under the von Neumann approach, the class of all sets which do not belong to themselves can be constructed, but it is a proper class and not a set.
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output: proper class


input: Please answer the following: Extract the answer to the question from the following context. Question: What increases teh odds of a male bird obtaining a mate? Context: Birds sometimes use plumage to assess and assert social dominance, to display breeding condition in sexually selected species, or to make threatening displays, as in the sunbittern's mimicry of a large predator to ward off hawks and protect young chicks. Variation in plumage also allows for the identification of birds, particularly between species. Visual communication among birds may also involve ritualised displays, which have developed from non-signalling actions such as preening, the adjustments of feather position, pecking, or other behaviour. These displays may signal aggression or submission or may contribute to the formation of pair-bonds. The most elaborate displays occur during courtship, where "dances" are often formed from complex combinations of many possible component movements; males' breeding success may depend on the quality of such displays.
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output:
ritualised displays