instruction:
In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
question:
What is reduced by playback equipment?, Context: Due to recording mastering and manufacturing limitations, both high and low frequencies were removed from the first recorded signals by various formulae. With low frequencies, the stylus must swing a long way from side to side, requiring the groove to be wide, taking up more space and limiting the playing time of the record. At high frequencies, hiss, pops, and ticks are significant. These problems can be reduced by using equalization to an agreed standard. During recording the amplitude of low frequencies is reduced, thus reducing the groove width required, and the amplitude at high frequencies is increased. The playback equipment boosts bass and cuts treble so as to restore the tonal balance in the original signal; this also reduces the high frequency noise. Thus more music will fit on the record, and noise is reduced.
answer:
treble

question:
Seattle is one of the what of the country?, Context: Of the city's population over the age of 25, 53.8% (vs. a national average of 27.4%) hold a bachelor's degree or higher, and 91.9% (vs. 84.5% nationally) have a high school diploma or equivalent. A 2008 United States Census Bureau survey showed that Seattle had the highest percentage of college and university graduates of any major U.S. city. The city was listed as the most literate of the country's 69 largest cities in 2005 and 2006, the second most literate in 2007 and the most literate in 2008 in studies conducted by Central Connecticut State University.
answer:
69 largest cities

question:
What was the value in pounds John offered per year?, Context: Under mounting political pressure, John finally negotiated terms for a reconciliation, and the papal terms for submission were accepted in the presence of the papal legate Pandulf Verraccio in May 1213 at the Templar Church at Dover. As part of the deal, John offered to surrender the Kingdom of England to the papacy for a feudal service of 1,000 marks (equivalent to 666 at the time) annually: 700 marks (466) for England and 300 marks (200) for Ireland, as well as recompensing the church for revenue lost during the crisis. The agreement was formalised in the Bulla Aurea, or Golden Bull. This resolution produced mixed responses. Although some chroniclers felt that John had been humiliated by the sequence of events, there was little public reaction. Innocent benefited from the resolution of his long-standing English problem, but John probably gained more, as Innocent became a firm supporter of John for the rest of his reign, backing him in both domestic and continental policy issues. Innocent immediately turned against Philip, calling upon him to reject plans to invade England and to sue for peace. John paid some of the compensation money he had promised the church, but he ceased making payments in late 1214, leaving two-thirds of the sum unpaid; Innocent appears to have conveniently forgotten this debt for the good of the wider relationship.
answer:
666