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In this task, you are given a set of context paragraphs, some supporting facts and an answer of a question. Your task is to generate question for given answer based on set of context paragraphs, supporting facts and an answer.

Context_1 : Charles Edward Ives ( ; October 20, 1874May 19, 1954) was an American modernist composer. He is one of the first American composers of international renown, though his music was largely ignored during his life, and many of his works went unperformed for many years. Over time, he came to be regarded as an "American original". He combined the American popular and church-music traditions of his youth with European art music, and was among the first composers to engage in a systematic program of experimental music, with musical techniques including polytonality, polyrhythm, tone clusters, aleatory elements, and quarter tones, foreshadowing many musical innovations of the 20th century. Context_2 : Daniel Evan Freeman (born 27 April 1959) is an American musicologist who specializes in European art music of the eighteenth century, in particular the musical culture of eighteenth-century Prague and the Bohemian lands. He is also active as a pianist and music editor. Context_3 : Art music (also known as Western classical music, cultivated music, serious music, canonic music, and more flippantly, real music or normal music) is an umbrella term that refers to musical traditions, implying advanced structural and theoretical considerations and a written musical tradition. "Serious" or "cultivated" music are terms frequently used as a contrast for ordinary, everyday music (popular and folk music, also called "vernacular music"). After the 20th century, art music was divided into two extensions: "serious music" and "light music". Context_4 : In the history of European art music, the term "common practice period" refers to the era between the formation and the dissolution of the tonal system. Though there are no exact dates for this phenomenon, most features of the common-practice period persisted from the mid to late baroque period, through the Classical and Romantic periods, or roughly from around 1650 to 1900. While certain prevailing patterns and conventions characterize the music of this period, the time period also saw considerable stylistic evolution. Some conventions evolved during this period that were rarely employed at other times during what may still be labeled "common practice" (for example, Sonata Form). Thus, the dates 16501900 are necessarily nebulous and arbitrary borders that depend on context. The most important unifying feature through this time period concerns a harmonic language to which modern music theorists can apply Roman numeral analysis. Context_5 : The Festival Oude Muziek Utrecht ("Utrecht Early Music Festival") is an annual music festival that showcases and celebrates early European art music. The ten-day festival takes place in the Dutch city of Utrecht, and begins in August. The programme comprises concerts, activities, lectures, exhibitions, and a symposium. Context_6 : Assaf Shelleg (Hebrew: ), is a musicologist and pianist, a senior lecturer of musicology at The Hebrew University of Jerusalem. He was previously the Schusterman Visiting Assistant Professor of Musicology and Jewish Studies in the Department of Religious Studies at the University of Virginia (201114), and had taught prior to that as the visiting Efroymson Scholar in the Jewish, Islamic & Near Eastern Languages and Cultures Department at Washington University in St. Louis (200911). Shelleg specializes in twentieth-century Jewish and Israeli art music and has published in some of the leading journals in both musicology and Israel Studies on topics ranging from the historiography of modern Jewish art music to the theological networks of Israeli art music. Shelleg's book, "Jewish Contiguities and the Soundtrack of Israeli History", appeared in November 2014 with Oxford University Press. The book studies the emergence of modern Jewish art music in central and Western Europe (1910s-1930s) and its translocation to Palestine/Israel (1930s-1970s), exposing the legacies of European antisemitism and religious Judaism in the making of Israeli art music. Moving to consider the dislocation of modern Jewish art music the book examines the paradoxes embedded in a Zionist national culture whose rhetoric negated its pasts, only to mask process of hybridizations enchained by older legacies. "Jewish Contiguities" has won the 2015 Engle Prize for the study of Hebrew Music, and the 2016 Jordan Schnitzer Book Award. Context_7 : Vocal harmony is a style of vocal music in which a consonant note or notes are simultaneously sung as a main melody in a predominantly homophonic texture. Vocal harmonies are used in many subgenres of European art music, including Classical choral music and opera and in the popular styles from many Western cultures ranging from folk songs and musical theater pieces to rock ballads. In the simplest style of vocal harmony, the main vocal melody is supported by a single backup vocal line, either at a pitch which is above or below the main vocal line, often in thirds or sixths which fit in with the chord progression used in the song. In more complex vocal harmony arrangements, different backup singers may sing two or even three other notes at the same time as each of the main melody notes, mostly with consonant, pleasing-sounding thirds, sixths, and fifths (although dissonant notes may be used as short passing notes). Context_8 : David Wallis Reeves (February 14, 1838 March 8, 1900), also known as D. W. Reeves or Wally Reeves, was an American composer, cornetist, and bandleader. He developed the American march style, later made famous by the likes of John Philip Sousa, and his innovations include adding a countermelody to the American march form in 1876. Sousa called Reeves "The Father of Band Music in America", and stated he wished he himself had written Reeves' "Second Regiment Connecticut National Guard March". Charles Ives also borrowed from the "Second Connecticut" on four occasions. Context_9 : "Indian classical music is one of many forms of art music that have their roots in particular regional cultures. For other "classical" and art music traditions, see List of classical and art music traditions." Context_10 : Progressive music is music that subverts genre and expands stylistic boundaries outwards. Rooted in the idea of a cultural alternative, musical progressiveness embodies a continuous move between explicit and implicit references to genres and strategies derived from various cultural domains, such as European art music, Celtic folk, West Indian, or African. The word "progressive" comes from the basic concept of "progress", which refers to development and growth by accumulation, and is often deployed in numerous music genres such as progressive country, progressive folk, progressive jazz, and (most significantly) progressive rock. fact_1 : Charles Ives also borrowed from the "Second Connecticut" on four occasions. fact_2 : Charles Edward Ives ( ; October 20, 1874May 19, 1954) was an American modernist composer. fact_3 : He combined the American popular and church-music traditions of his youth with European art music, and was among the first composers to engage in a systematic program of experimental music, with musical techniques including polytonality, polyrhythm, tone clusters, aleatory elements, and quarter tones, foreshadowing many musical innovations of the 20th century. Answer: 1874May
Solution: What is the birthyear of the American composer that borrowed from "Second Connecticut" on four occasions and combined American popular and church-music traditions with European art music?
Why? From the fact_1 from context _8, and fact _2 and fact _3 from context _1, we can arrive at 1874 May which is accurate answer of generated question.

New input: Context_1 : The Pyatt Tunnel is a historic railroad tunnel in Marion County, Arkansas. It is a 660 ft tunnel, hewn through bedrock beneath a ridge north of Crooked Creek and southeast of the city of Pyatt. The tunnel's portals are unimproved, and the tunnel itself has no concrete reinforcement, unlike other tunnels on the White Mountain Division of the Missouri Pacific Railroad, which passes through it. The tunnel was built in 1903-04, and is one of seven railroad tunnels in the state. Context_2 : The Portland and Southwestern Railroad Tunnel, also known as the Nehalem Divide Railroad Tunnel, is an abandoned railroad tunnel near Scappoose, Oregon, United States, that is listed on the National Register of Historic Places. The tunnel was driven by the Portland and Southwestern Railroad, whose chief business was logging. Unusually for a logging railroad, the Portland and Southwestern built tunnels. In order to reach the far side of the Nehalem divide in the Northern Oregon Coast Range, the railroad undertook a 1712 ft tunnel. Some work was started in 1910, but most work began in 1918 and was completed in 1919. Since the tunnel was not through solid rock, the tunnel was lined with timber. The tunnel was used until 1945, when it was replaced by a truck road over the divide. Context_3 : The Byfjord Tunnel (Norwegian: "Byfjordtunnelen" ) is a subsea road tunnel in Rogaland county, Norway. The 5875 m long tunnel runs between Grdem on the mainland in Randaberg and the island of Sokn in Rennesy municipality, running underneath the Byfjorden. The tunnel was built as part of the Rennesy Fixed Link project which opened in 1992 with the goal of connecting all the islands of Rennesy to the mainland. The tunnel was a toll road from 1992 until 2006. The tunnel is part of European route E39 highway. With a maximum 8% grade, the tunnel reaches a depth of 223 m below sea level at its lowest point. The tunnel held the distinction of being Europe's longest and the world's deepest tunnel upon its completion, it was surpassed by a deeper tunnel in 1994 and a longer tunnel in 1999. The tunnel had an average daily traffic of 9,675 vehicles in 2015. Context_4 : The Saverne Tunnel (French: "Tunnel de Saverne" ), also known as the Ernolsheim-les-Saverne Tunnel (French: "Tunnel d'Ernolsheim-les-Saverne" ), is a twin-bore, high-speed rail tunnel in western Bas-Rhin, France. It carries the LGV Est line of France's TGV high-speed rail network through the narrowest part of the Vosges mountain range, beneath Mont Saint-Michel and adjacent to the Saverne Pass. The tunnel consists of two bores, containing one railroad track each, that are connected by passageways every 500 m . The LGV Est crosses the 270 m Haspelbaechel viaduct near the western end of the tunnel. The tunnel was excavated by a tunnel boring machine between November 2011 and February 2013. Civil engineering work on the tunnel ended in April 2014 and it opened with the rest of the second phase of the LGV Est on 3 July 2016. The total cost of the tunnel was approximately 200million. Context_5 : The Blue Ridge Tunnel (also known as the Crozet Tunnel) is a historic railroad tunnel built during the construction of the Blue Ridge Railroad in the 1850s. The tunnel was the westernmost and longest of four tunnels engineered by Claudius Crozet to cross the Blue Ridge Mountains at Rockfish Gap in central Virginia. At 4237 ft in length, the tunnel was the longest tunnel in the United States at the time of its completion in 1858. The tunnel was used by the Virginia Central Railroad from its opening to 1868, when the line was reorganized as the Chesapeake and Ohio Railroad (renamed Chesapeake and Ohio Railway in 1878). The Chesapeake and Ohio routed trains through the tunnel until it was abandoned and replaced by a new tunnel in 1944. The new tunnel was named the "Blue Ridge Tunnel" as well, although the original tunnel still remains abandoned nearby. The old Blue Ridge Tunnel has since been named a Historic Civil Engineering Landmark. Context_6 : Of all the seven tunnels on the Lackawanna Railroad's 400-mile mainline, Oxford Tunnel or Van Nest Gap Tunnel would be arguably the most difficult to build. The combination of stubborn gneiss, inconsistent funding and American Civil War-era technology caused protracted delays. Meanwhile, the construction of the Warren Railroad itself, of which Oxford Tunnel was just a part, caused its chief overseer, John I. Blair, daily headaches. The line would require three large bridges, two tunnels (the other tunnel being at Manunka Chunk), and many miles of cutting and filling. The terrain was less than ideal for a railroad. As such, for over a century, rail historians thought that Tunnel Hill had been initially crossed, prior to the completion of the tunnel underneath, by a switchback or some sort of cheaply built temporary route. Neither was true. In fact, Blair had built a fairly substantial, albeit circuitous, route over the hill. Local inspections during the early 1980s revealed that the actual route taken by temporary track had been partially obliterated by a corn field, misleading previous historians into believing that the route had been configured differently. Context_7 : The Cricket Tunnel and Crest Tunnel are a pair of railroad tunnels in northern Arkansas, near the city of Omaha in Boone County. The Crest Tunnel, at 3500 ft is the longest tunnel in Arkansas, and is its only curved tunnel. Both tunnels were built by the White River Division of the Missouri Pacific Railroad in the early 20th century. The tunnels were listed on the National Register of Historic Places in 2007. Context_8 : The Missouri Pacific Railroad (reporting mark MP) , commonly abbreviated MoPac, with nickname of The Mop, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway (SLIMS), Texas and Pacific Railway (TP), Chicago and Eastern Illinois Railroad (C&EI), St. Louis, Brownsville and Mexico Railway (SLBM), Kansas, Oklahoma and Gulf Railway (KO&G), Midland Valley Railroad (MV), San Antonio, Uvalde and Gulf Railroad (SAU&G), Gulf Coast Lines (GC), International-Great Northern Railroad (IGN), New Orleans, Texas and Mexico Railway (NOTM), Missouri-Illinois Railroad (MI), as well as the small Central Branch Railway (an early predecessor of MP in Kansas and south central Nebraska), and joint ventures such as the Alton and Southern Railroad (AS). Context_9 : The Simpson Tunnel, so named for the Simpson Farm it passed under, was a railroad tunnel originally built in 1903 by U.S. Steel and subsequently used by the Dunlap Creek branch of the Monongahela Railway. The tunnel was made of stone with a brick arch construction. The line was utilized both to serve coal mines and coke works in the area and to interchange with the Baltimore and Ohio Railroad's Fairmont, Morgantown and Pittsburgh line and the Pennsylvania Railroad's Coal Lick Run branch. The last move on that line, and thus through the tunnel, was on November 6, 1975. The line was subsequently abandoned by 1976 and the real estate disposed, however the tunnel was not destroyed or blocked at the time. At some point between 2008 and 2010 the tunnel was destroyed, likely due to the construction of the Mon-Fayette Expressway. It is not clear whether the tunnel was blasted or simply filled in. Context_10 : The Bellows Falls Tunnel is a railroad tunnel located in center of the Village of Bellows Falls within the Town of Rockingham, Vermont, adjacent to the Connecticut River, and is currently owned and operated by the New England Central Railroad (NECR). The Vermont Valley Railroad originally constructed the tunnel in 1851. Partially cut through solid rock, the tunnel was built with rough-cut stone blocks, where each portal was decorated with radiating voussoirs around their horseshoe shaped arches. The stone blocks average about 18 inches deep as observed at the tunnel portals. Record information available from the NECR would indicate that a separate support system exists above the masonry tunnel supporting the hotel building to the north of the Bridge Street roadway which is also directly above, and crosses perpendicular (east/west) to the tunnel below. fact_1 : The Cricket Tunnel and Crest Tunnel are a pair of railroad tunnels in northern Arkansas, near the city of Omaha in Boone County. fact_2 : Both tunnels were built by the White River Division of the Missouri Pacific Railroad in the early 20th century. fact_3 : The Missouri Pacific Railroad (reporting mark MP) , commonly abbreviated MoPac, with nickname of The Mop, was one of the first railroads in the United States west of the Mississippi River. Answer: MoPac
Solution:
What was the common abbreviation for the railroad by which the Cricket Tunnel and Crest Tunnel were built?