[Q]: Question: "Do people still use wood for heat?"  Context: "Wood has a long history of being used as fuel, which continues to this day, mostly in rural areas of the world. Hardwood is preferred over softwood because it creates less smoke and burns longer. Adding a woodstove or fireplace to a home is often felt to add ambiance and warmth."  Answer:
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[A]: continues to this day


[Q]: Question: "Jurassic World earned?"  Context: "As of 2015, Universal is the only studio to have released three billion-dollar films in one year; this distinction was achieved in 2015 with Furious 7, Jurassic World and Minions."  Answer:
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[A]: billion-dollar


[Q]: Question: "What does samadhi belong to?"  Context: "In the language of the Noble Eightfold Path, samyaksamādhi is "right concentration". The primary means of cultivating samādhi is meditation. Upon development of samādhi, one's mind becomes purified of defilement, calm, tranquil, and luminous."  Answer:
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[A]: language of the Noble Eightfold Path


[Q]: Question: "Where is the Tulong reservoir?"  Context: "The Zipingpu Hydropower Plant (simplified Chinese: 紫坪铺水库; traditional Chinese: 紫坪鋪水庫) located 20 km east of the epicenter was damaged. A recent inspection indicated that the damage was less severe than initially feared, and it remains structurally stable and safe. The Tulong reservoir upstream is in danger of collapse. About 2,000 troops have been allocated to Zipingpu, trying to release the pressure through spillway. In total, 391 dams, most of them small, were reported damaged by the quake."  Answer:
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[A]:
upstream