Question: The MKT Nature and Fitness Trail runs nine miles in the right of way of what former Class 1 railroad company that was established in 1865, and had its last headquarters in Dallas?

<P0-S0> The Missouri–Kansas–Texas Railroad (reporting mark MKT) is a former Class I railroad company in the United States, with its last headquarters in Dallas. <P0-S1>  Established in 1865 under the name Union Pacific Railway, Southern Branch, it came to serve an extensive rail network in Texas, Oklahoma, Kansas, and Missouri. <P0-S2>  In 1988, it merged with the Missouri Pacific Railroad and is now part of Union Pacific Railroad. <SEP> <P1-S0> The Nashville Terminal Subdivision is a railroad line owned by CSX Transportation in the U.S. State of Tennessee. <P1-S1>  The tracks from left to right in Kayne Ave are as follows: 100, 99, 98, 12, 3. <P1-S2>  From there, the cutoff hits the Intermediates at 0BA187.0 known as Chicken Pike. <P1-S3>  There is a crossover from 99 to 12, also a crossover from 12 to 3. <P1-S4>  Now it runs single for three miles until it hits Danley, which has the D Line connection track, which is an arrival track for incoming Radnor trains from the J Line. <P1-S5>  When trains use this crossover northbound, such as Memphis bound trains from the A-2 line, they refer to it as "Long Lead". <P1-S6>  The main then runs down to Kayne Ave, the central hotbed of all Nashville thru traffic. <P1-S7>  There is also the first EDD (Defect Detector) at 000179.1. <P1-S8>  The Bruceton line then goes southwest a while to the next signals, at "Shops". <P1-S9>  Then tracks run south to Fogg St/South End where things get complicated. <P1-S10>  On the #1 track about a half a mile south, another connecting track is present. <P1-S11>  The Union Station is not an active station, but a historic hotel. <P1-S12>  At this point, trains had been running at track speed of around 40. <P1-S13>  The Subdivision is broken up into 5 sections all in Nashville, Tennessee. <P1-S14>  The B-Line which meets the #1 track is used for departures out of the C yard and local jobs. <SEP> <P2-S0> The Fall River, Warren and Providence Railroad was a railroad in southeastern Massachusetts and Rhode Island connecting the city of Fall River, Massachusetts with Warren, Rhode Island. <P2-S1>  It incorporated in 1862 as a merger of the "Warren and Fall River Railroad Company" of Rhode Island and the "Fall River and Warren Railroad Company" of Massachusetts. <P2-S2>  The railroad line itself was not completed until 1865. <P2-S3>  It ran for 8.0 miles from the Providence, Warren and Bristol Railroad line in Warren, Rhode Island to Somerset, Massachusetts, directly across the Taunton River from Fall River. <SEP> <P3-S0> The MKT Nature and Fitness Trail is a recreational rail trail in Columbia, Missouri, that runs nine miles (14 km) in the right-of-way of the former Missouri–Kansas–Texas Railroad. <P3-S1>  MKT is an acronym for Missouri-Kansas-Texas. <P3-S2> Developed from 1982 onward, it is a spur of the longest rail trail in the United States, the Katy Trail. <P3-S3>  It is open for use by hikers, joggers, and cyclists year-round, from sunrise to sunset, with snow covering in the winter offering users cross-country skiing opportunities. <P3-S4>  The trail is made up of "limestone pug" (crushed limestone), creating a hard, flat surface. <P3-S5>  The trail follows Flat Branch Creek and Hinkson Creek for much of their distance and is part of a larger system of recreational pathways in the Columbia Metropolitan Area.