Question: Rockland Railroad Station has been leased to what Class III freight railroad operating in the U.S. states of Maine and Vermont and the Canadian province of Quebec 

Context paragraphs:
Central Maine and Quebec Railway: The Central Maine & Québec Railway (reporting mark CMQ) is a Class III freight railroad operating in the U.S. states of Maine and Vermont and the Canadian province of Quebec with headquarters in New York, NY.  It is owned by Railroad Acquisition Holdings, LLC, a subsidiary of Fortress Investment Group, LLC.

Montreal, Maine and Atlantic Railway: The Montreal, Maine and Atlantic Railway (reporting mark MMA) was a Class II freight railroad that operated in the U.S. states of Maine and Vermont and the Canadian province of Quebec between 2002 and 2014.  It was headquartered in Hermon, Maine.

Rockland Railroad Station: The Rockland Railroad Station is a railway station located at Union and Pleasant Streets in Rockland, Maine.  It is the eastern terminus of the Rockland Branch, a state-owned track connecting Rockland and Brunswick.  The historic station building was built in 1917 by the Maine Central Railroad, and is listed on the National Register of Historic Places; it presently houses a restaurant, and served for a time as Rockland's city hall.  The line is presently inactive, having most recently had seasonal passenger service from 2004 to 2015 operated by the Maine Eastern Railroad.  The line has been leased to the Central Maine and Quebec Railway, which is planning to reintroduce service on the line.

Chicago South Shore and South Bend Railroad: The Chicago South Shore and South Bend Railroad (reporting mark CSS) , also known as the South Shore Line, is a Class III freight railroad operating between Chicago, Illinois, and South Bend, Indiana.  The railroad serves as a link between Class I railroads and local industries in northeast Illinois and northwest Indiana.  It built the South Shore Line electric interurban and operated it until 1990, when it transferred it to the Northern Indiana Commuter Transportation District.  The railroad is owned by the Anacostia Rail Holdings Company.

Texas &amp; New Mexico Railway: The Texas & New Mexico Railway (reporting mark TXN) is a class III short-line railroad operating in west Texas and southeast New Mexico.  The railroad line operates on 111 miles of track from a connection with the Union Pacific Railroad at Monahans, Texas, and terminates at Lovington, New Mexico.  The railroad primarily provides freight service for the oilfields and related industries in the region.

Corinth and Counce Railroad: The Corinth and Counce Railroad was a Class III railroad operating freight service between Mississippi and Tennessee.  The line was built in 1959, expanded in 1974 and sold in 1991 to a new owner who changed the railroad's name.  Today, some of the Corinth and Counce's trackage is operated by the Kansas City Southern Railway.

Rockton and Rion Railway: The Rockton and Rion Railway was a Class III railroad operating freight service in Fairfield County, South Carolina until its abandonment in 1981.  The railroad's entire 12-mile right-of-way is now owned by the South Carolina Railroad Museum, which rebuilt some of the railroad and currently operates on 5 miles of the line.

Sand Springs Railway: The Sand Springs Railway (reporting mark SS) is a class III railroad operating in Oklahoma.  It began in 1911 as an interurban railway providing passenger service between Tulsa and Sand Springs.  It soon developed a freight hauling business between the two cities.  Passenger service was discontinued January 5, 1955, but the railroad has continued to operate until the present.  On May 28, 2014, it was announced that the railroad would be acquired by OmniTRAX, with operations commencing no later than July 31, 2014

Rockland Branch: The Rockland Branch is a railroad from Brunswick, Maine to Rockland, Maine.  A charter was granted in 1849 to build a railway from the Portland and Kennebec Railroad on the west side of the Kennebec River to Rockland.  Construction through the rocky headlands of the Atlantic coast proved more expensive than anticipated.  The Knox and Lincoln Railroad commenced service to Rockland in 1871 using a ferry to cross the Kennebec River between Bath and Woolwich.  The Knox and Lincoln was leased by Maine Central Railroad in 1891, and became Maine Central's Rockland Branch in 1901.  Maine Central purchased the Samoset destination hotel in nearby Glen Cove (a part of neighbouring Rockport) in 1912, and offered direct passenger service for summer visitors from the large eastern cities.  Carlton bridge was completed in 1927 to carry the railroad and U.S. Route 1 over the Kennebec River.  Maine Central sold the Samoset hotel in 1941, and the last Maine Central passenger train to Rockland was on 4 April 1959.  The State of Maine purchased the branch in 1987 to prevent abandonment.  The line has subsequently been operated by the Maine Coast Railroad, the Maine Eastern Railroad, and, beginning in 2016, the Central Maine and Quebec Railway.

Ballard Terminal Railroad: The Ballard Terminal Railroad Company LLC (reporting mark BDTL) operates three Class III short line terminal railroads in western Washington, United States.  Founded in 1997 to operate a three-mile spur through Seattle's Ballard neighborhood, the Ballard Terminal Railroad has expanded to operate two additional lines in the Puget Sound area, including Eastside Freight Railroad (reporting mark EFRX) from Snohomish to Woodinville, Washington, and Meeker Southern Railroad (reporting mark MSN) , a 5 mi segment from East Puyallup ("Meeker") to McMillin, Washington.

Supporting paragraphs: Rockland Railroad Station Central Maine and Quebec Railway
Answer: Central Maine and Quebec Railway