Problem: Given the question: Extract the answer to the question from the following context. Question: How are light orbs similar to fixtures? Context: An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings. The more transparent the lighting fixture is, the higher efficacy. Shading the light will normally decrease efficacy but increase the directionality and the visual comfort probability.
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The answer is:
efficiency quoted as the percentage of light passed from the "bulb" to the surroundings


Problem: Given the question: Extract the answer to the question from the following context. Question: Which happened later, the papacy of Leo IX, or the Concordat of Worms? Context: Monastic reform inspired change in the secular church. The ideals that it was based upon were brought to the papacy by Pope Leo IX (pope 1049–1054), and provided the ideology of the clerical independence that led to the Investiture Controversy in the late 11th century. This involved Pope Gregory VII (pope 1073–85) and Emperor Henry IV, who initially clashed over episcopal appointments, a dispute that turned into a battle over the ideas of investiture, clerical marriage, and simony. The emperor saw the protection of the Church as one of his responsibilities as well as wanting to preserve the right to appoint his own choices as bishops within his lands, but the papacy insisted on the Church's independence from secular lords. These issues remained unresolved after the compromise of 1122 known as the Concordat of Worms. The dispute represents a significant stage in the creation of a papal monarchy separate from and equal to lay authorities. It also had the permanent consequence of empowering German princes at the expense of the German emperors.
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The answer is:
the Concordat of Worms


Problem: Given the question: Extract the answer to the question from the following context. Question: What women's sport does Oklahoma City feature every year? Context: Oklahoma City is the annual host of the Big 12 Baseball Tournament, the World Cup of Softball, and the annual NCAA Women's College World Series. The city has held the 2005 NCAA Men's Basketball First and Second round and hosted the Big 12 Men's and Women's Basketball Tournaments in 2007 and 2009. The major universities in the area – University of Oklahoma, Oklahoma City University, and Oklahoma State University – often schedule major basketball games and other sporting events at Chesapeake Energy Arena and Chickasaw Bricktown Ballpark, although most home games are played at their campus stadiums.
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The answer is:
Softball