Question: Who owns the 222 acre park in the city 7 mi west of downtown Portland?
Context: The Portland Vintage Trolley was a heritage streetcar service in Portland, Oregon, United States, that operated from 1991 to 2014.  It operated on a portion of the MAX light rail system, and for a brief time also operated on the Portland Streetcar system, in downtown and nearby areas.  Service was provided with replicas of a type of Brill streetcar, nicknamed the "Council Crest" cars, which last served Portland in 1950.  The service was managed by Vintage Trolley Inc., a non-profit corporation, and the cars were owned and operated by TriMet, Portland's transit agency.  For 18 of its 23 years, the service followed a 2.3 mi section of what is now the MAX Blue Line, between Lloyd Center and the west end of downtown.  In September 2009, the route was changed to a 1.5 mi section of the MAX system, along the transit mall in downtown Portland, from Union Station to Portland State University (PSU). Central Park is a 90-hectare (222 acre) urban park in Burnaby, British Columbia, founded in 1891. The Oregon Zoo, formerly the Washington Park Zoo, is a zoo in Portland, the largest city in the U.S. state of Oregon.  Located 2 mi southwest of Downtown Portland, the zoo is inside Portland's Washington Park, and includes the narrow gauge Washington Park & Zoo Railway that connects to the International Rose Test Garden inside the park.  Opened in 1888 after a private animal collector donated his animals to the City of Portland, the 64 acre zoo is now owned by the regional Metro government. The Tualatin Hills Nature Park is a 222-acre nature park and wildlife preserve in Beaverton, Oregon, owned by the Tualatin Hills Park and Recreation District.  It is one of THPRD's two nature parks along with Cooper Mountain Nature Park.  The park features 5 mi of trails, of which 1.5 miles are paved and 3.5 miles unpaved.  The park features a diverse environment including several types of both evergreen and deciduous trees as well as creeks, wetlands, ponds, and meadows.  Located on 15655 S.W. Millikan Way, at the main entrance to the park, is the Tualatin Hills Nature Center, formerly called the Tualatin Hills Nature Park Interpretive Center.  The name was changed in November 2014.  Nature supervisor Kristin Atman said that "six words is really a mouthful" and the new name would be more consistent with THPRD's other facilities. Keller Fountain Park is a city park in downtown Portland, Oregon.  Originally named Forecourt Fountain or Auditorium Forecourt, the 0.92 acre park opened in 1970 across Third Avenue from what was then Civic Auditorium.  In 1978, the park was renamed after Ira Keller, head of the Portland Development Commission (PDC) from 1958–1972.  Civic Auditorium was renamed as Keller Auditorium in 2000, but is named in honor of Richard B. Keller. Locust Lake State Park is a Pennsylvania state park on 1089 acre in Ryan Township, Schuylkill County, Pennsylvania in the United States.  Locust Lake State Park is located approximately 7 mi north of Pottsville, 3 mi south of Mahanoy City, 8 mi west of Tamaqua and 6 mi west of Tuscarora State Park.  The lake is 52 acre .  The park offers hiking, camping, boating, fishing, swimming, biking, and a wide array of other seasonal activities. George Dudley Seymour State Park is a public recreation area occupying 222 acre on the east bank of the Connecticut River in the town of Haddam, Connecticut.  Hurd State Park abuts the park to the north.  The park bears the name of George Dudley Seymour (1859-1945), whose philanthropic efforts enabled the state to purchase land for this and several other Connecticut state parks.  It is managed by the Connecticut Department of Energy and Environmental Protection. Beaverton is a city in Washington County, in the U.S. state of Oregon.  The city center is 7 mi west of downtown Portland in the Tualatin River Valley. Pennsylvania Route 272 (PA 272) is a 54.7 mi highway in eastern Pennsylvania, in the Lancaster area.  The southern terminus of the route is at the Mason–Dixon line southeast of Nottingham, where it continues into Maryland as Maryland Route 272 (MD 272).  The northern terminus is at an interchange with U.S. Route 222 (US 222) and PA 568 in Adamstown, where PA 568 continues east.  The route heads from the Maryland border northwest through the western corner of Chester County, intersecting US 1 in Nottingham.  PA 272 continues west into Lancaster County and intersects US 222 in Wakefield, where it turns north and passes through Buck before widening into a divided highway as it comes to another junction with US 222 in Willow Street.  Here, the route becomes unsigned and follow US 222 north through Lancaster along one-way city streets.  North of Lancaster, US 222 splits at an interchange with US 30 and PA 272 becomes signed again, heading northeast parallel to the freeway alignment of US 222 and passing through Akron, Ephrata (where it intersects US 322), and Adamstown.  The route enters Berks County and comes to its northern terminus. Governor Tom McCall Waterfront Park is a 36.59 acre park located in downtown Portland, Oregon, along the Willamette River.  After the 1974 removal of Harbor Drive (a good example of freeway removal), the park was opened to the public in 1978.  The park covers 13 tax lots is owned by the City of Portland (Portland Parks and Recreation).  The park was renamed in 1984 to honor Tom McCall, the Oregon governor who pledged his support for the beautification of the west bank of the Willamette River—harkening back to the City Beautiful plans at the turn of the century that envisioned parks and greenways along the river.  The park is bordered by RiverPlace to the south, the Steel Bridge to the north, Naito Parkway to the west, and Willamette River to the east.  In October 2012, Waterfront Park was voted one of America's ten greatest public spaces by the American Planning Association.
Answer: Tualatin Hills Park and Recreation District