input question: Extract the answer to the question from the following context. Question: What makes a climbing elevator move? Context: A climbing elevator is a self-ascending elevator with its own propulsion. The propulsion can be done by an electric or a combustion engine. Climbing elevators are used in guyed masts or towers, in order to make easy access to parts of these constructions, such as flight safety lamps for maintenance. An example would be the Moonlight towers in Austin, Texas, where the elevator holds only one person and equipment for maintenance. The Glasgow Tower — an observation tower in Glasgow, Scotland — also makes use of two climbing elevators.???
output answer: its own propulsion

input question: Extract the answer to the question from the following context. Question: How was the law perceived in the 18th century? Context: As federal judge Alex Kozinski has pointed out, binding precedent as we know it today simply did not exist at the time the Constitution was framed. Judicial decisions were not consistently, accurately, and faithfully reported on both sides of the Atlantic (reporters often simply rewrote or failed to publish decisions which they disliked), and the United Kingdom lacked a coherent court hierarchy prior to the end of the 19th century. Furthermore, English judges in the eighteenth century subscribed to now-obsolete natural law theories of law, by which law was believed to have an existence independent of what individual judges said. Judges saw themselves as merely declaring the law which had always theoretically existed, and not as making the law. Therefore, a judge could reject another judge's opinion as simply an incorrect statement of the law, in the way that scientists regularly reject each other's conclusions as incorrect statements of the laws of science.???
output answer: natural

input question: Extract the answer to the question from the following context. Question: Where do plants get important elements from? Context: Plants uptake essential elements from the soil through their roots and from the air (consisting of mainly nitrogen and oxygen) through their leaves. Green plants obtain their carbohydrate supply from the carbon dioxide in the air by the process of photosynthesis. Carbon and oxygen are absorbed from the air, while other nutrients are absorbed from the soil. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps. These hydrogen ions displace cations attached to negatively charged soil particles so that the cations are available for uptake by the root. In the leaves, stomata open to take in carbon dioxide and expel oxygen. The carbon dioxide molecules are used as the carbon source in photosynthesis.???
output answer: the soil through their roots and from the air

input question: Extract the answer to the question from the following context. Question: Which of the following people were not in Indiana Jones and the Kingdom of the Crystal Skull: Harrison Ford, Cate Blanchett, or Julia Roberts? Context: Several recent movies have been filmed in New Haven, including Mona Lisa Smile (2003), with Julia Roberts, The Life Before Her Eyes (2007), with Uma Thurman, and Indiana Jones and the Kingdom of the Crystal Skull (2008) directed by Steven Spielberg and starring Harrison Ford, Cate Blanchett and Shia LaBeouf. The filming of Crystal Skull involved an extensive chase sequence through the streets of New Haven. Several downtown streets were closed to traffic and received a "makeover" to look like streets of 1957, when the film is set. 500 locals were cast as extras for the film. In Everybody's Fine (2009), Robert De Niro has a close encounter in what is supposed to be the Denver train station; the scene was filmed in New Haven's Union Station.???
output answer:
Julia Roberts