question: The Sudbury Reservoir, is an emergency backup Boston metropolitan water reservoir located in Framingham, a town in the Commonwealth of Massachusetts, in which country?
answer: United States
context: Title: Sudbury Dam Historic District
  Passage: The Sudbury Dam Historic District is a historic district on the southeastern end of Sudbury Reservoir off MA 30 in Framingham and Southborough, Massachusetts.  The district encompasses the Sudbury Dam (also known as the Fayville Dam for the nearby neighborhood of Southborough), which impounds the reservoir, and an area encompassing several historic structures located below the dam.  The area includes water-supply-related structures from three phases of development of the Greater Boston water supply system.  It was listed on the National Register of Historic Places in 1990.
  Title: Chestnut Hill Reservoir
  Passage: Chestnut Hill Reservoir is a reservoir created in 1870 on existing marshes and meadowland to supplement the city of Boston's water needs.  It is surrounded by Chestnut Hill, a neighborhood which consists of parts of Boston, Brookline, and Newton.  The reservoir, though, is located entirely within the city limits of Boston.  A 1.56 mile jogging loop abuts the reservoir.  Chestnut Hill Reservoir was taken offline in 1978 as it was no longer needed for regular water supply distribution, but is maintained in emergency backup status.  It is recognized today on the National Register of Historic Places and it has designation as a City of Boston Landmark.
  Title: Framingham Reservoir No. 2 Dam and Gatehouse
  Passage: The Framingham Reservoir No. 2 Dam and Gatehouse is a historic water works facility in Framingham, Massachusetts.  The dam and gatehouse are located west of the junction of Winter and Fountain Streets, and impound a branch of the Sudbury River.  The reservoir, which is also known as the Brackett Reservoir, was built 1877-79 as part of an expansion of the water supply of the city of Boston.  The dam is 1376 ft in length, with a centered overfall area.  The core of the dam is granite rubble laid in cement, with earthen embankments.  The overfall area is faced on the downstream side with cut granite, and earthen embankment on the upstream side.  It is topped with granite and originally had iron mounts for flashboards.  The gatehouse is a rectangular granite structure with a steep hip roof, a brick chimney and an eyebrow dormer.  The door and windows are in round-arch openings.  It contains gate controls for regulating water flow from the reservoir and from a 4 ft pipe connected to Reservoir No. 1, and a 2 ft pipe connected to the Ashland Reservoir.
  Title: Sudbury Aqueduct
  Passage: The Sudbury Aqueduct is an aqueduct in Massachusetts.  It runs for 16 mi from Farm Pond at Waverly Street in Framingham to Chestnut Hill Reservoir in Boston.  A later built extension main runs from the Farm Pond gatehouse to the gatehouse at the Stearns Reservoir (Framingham Reservoir #1) where additional mains connect to the Brackett and Foss Reservoirs (Framingham #2 and #3.)  Going east from Framingham, it runs through Sherborn before entering Natick.  From Natick it runs east through Wellesley and Needham to the Charles River, which it crosses on the Echo Bridge into Newton.  It ends at the Chestnut Hill Reservoir on the Newton side of the Newton-Boston line.  The Massachusetts Water Resources Authority (MWRA) operates the aqueduct.
  Title: Weston Aqueduct
  Passage: The Weston Aqueduct is an aqueduct operated by the Massachusetts Water Resources Authority.  Now part of the MWRA backup systems, it was designed to deliver water from the Sudbury Reservoir in Framingham to the Weston Reservoir in Weston.  The 13.5 mi aqueduct begins at the Sudbury Dam, and passes through the towns of Southborough, Framingham, Wayland, and Weston.  In 1990 the route, buildings and bridges of the aqueduct were added to the National Register of Historic Places as the Weston Aqueduct Linear District.
  Title: Framingham, Massachusetts
  Passage: Framingham is a town in the Commonwealth of Massachusetts in the United States.  Incorporated in 1700, it is located within Middlesex County and the MetroWest subregion of the Greater Boston metropolitan area.  The town proper covers 25 mi2 with an estimated population of 68,318 in 2010, making it the 14th most populous municipality in Massachusetts.  Residents voted in favor of adopting a charter to transition from a representative town meeting system to a mayor–council government in April 2017, and will transition to city status on January 1, 2018.
  Title: Sudbury Reservoir
  Passage: The Sudbury Reservoir (2.02 square miles) is an emergency backup Boston metropolitan water reservoir located in Framingham, Marlborough, Southborough, and Westborough, Massachusetts.  Nearly 5000 acre in the Sudbury Reservoir watershed are administered by the Massachusetts Department of Conservation and Recreation as a limited-access public recreation area.
citations: Sudbury Reservoir Framingham, Massachusetts