Question: Imagine was filmed at which Grade II listed house?

Context paragraphs:
Tittenhurst Park: Tittenhurst Park is a Grade II listed early Georgian country house in an estate of 72 acre off London Road at Beggar's Bush near Ascot and over the parish border into Sunningdale, both in the English county of Berkshire.  It was famously the home of musicians John Lennon and Yoko Ono from the late summer of 1969 until August 1971, and then the home of Ringo Starr and family until the late 1980s.  Starr sold the property to Sheikh Zayed bin Sultan Al Nahyan, President of the United Arab Emirates, in 1989.

Listed buildings in Lichfield: Lichfield is a cathedral city in Staffordshire, England.  This list includes the 34 listed buildings within the civil parish boundaries of the city of Lichfield.  6 are classified by English Heritage as being in Grade I, 28 in Grade II* and 220 in Grade II (this list does not include Grade II listed buildings).  In the United Kingdom, the term "listed building" refers to a building or other structure officially designated as being of special architectural, historical or cultural significance.  These buildings are in three grades: Grade I consists of buildings of outstanding architectural or historical interest; Grade II* includes particularly significant buildings of more than local interest; Grade II consists of buildings of special architectural or historical interest.  Buildings in England are listed by the Secretary of State for Culture, Media and Sport on recommendations provided by English Heritage, which also determines the grading.

Imagine (1972 film): Imagine is a 1972 television film by John Lennon and Yoko Ono, filmed mostly at their Tittenhurst Park home in Ascot, England, during 1971, and intended for television.  All the songs from Lennon's "Imagine" album appear in the soundtrack, and also the songs "Mrs. Lennon" and "Don't Count the Waves", from Ono's album "Fly".

St John's Church, Portland: St. John's Church (also known as St John the Baptist Church) is a 19th-century Anglian church, located in Fortuneswell village, on the Isle of Portland, Dorset.  It was built between 1838–40 and has been a Listed Grade II building since January 1951.  The churchyard walls, gate piers, railings, and steps of St. John's Church, dating from 1839–40, became Grade II Listed in September 1978.  At this same time, two headstone monuments, about 5 metres north east from the west tower of the church became Grade II Listed.

The Vineyard, Richmond: The Vineyard is a road in Richmond, London.  It includes three groups of almshouses, a Grade II listed church (St Elizabeth of Portugal Church) and Clarence House, a 17th-century Grade II listed house associated with Bernardo O’Higgins, who is commemorated on the wall of the property with a blue plaque, installed by English Heritage, for his work in the Chilean War of Independence.

Church Hill House, Haslemere: Church Hill House is a grade II* listed house in Tanners Lane, Haslemere, Surrey.  Parts of the walls are grade II listed as well as the adjoining Church Hill Gate.

Byne House: Byne House is a grade II* listed house at 40 Church Street, Warminster, Wiltshire, England.  It was built in 1755 for the clothier John Wansey and is an example of the wealth that accrued to the area from the wool industry.  It was later the home of the headmaster of Warminster School.  The house was badly damaged by fire in 2007.  The nineteenth century railings outside the house are grade II listed.

Carr Manor: Carr Manor is a Victorian grade II listed house in Meanwood, Leeds, England, designed by Edward Schroeder Prior and built for Thomas Clifford Allbutt M.D. (1836–1925).  In 1881 it replaced Carr Manor House, though retaining the 1796 stable block.  The former gardener's and housekeeper's cottages, the former stables (now garage) and the wall, gate piers and gates are also grade II listed.

St Mary's Parish Church, Slough: St Mary's Parish Church is a red brick gothic style Church of England parish church in the parish of Upton cum Chalvey in the borough of Slough and the county of Berkshire in England.  Built between 1876-8 to a design by John Oldrid Scott and partly funded through a personal donation by Queen Victoria, it was again enlarged in 1911-1913, and is protected as a grade II* listed building.  The grounds contain the grade II listed war memorial by the west door of the church, inscribed with over 300 names of the dead from Slough in the First and Second World Wars.  The walls and gates of the church yard are also protected grade II listed features.  The church is located centrally in the parish, serving the Slough town centre.  The church is linked to two schools in the area, Saint Mary's Church of England Primary School, in Upton, and Slough and Eton Church of England Secondary School, in Chalvey.  The building regularly plays host to musical concerts, often including accompaniment on the organ

High House, Purfleet: High House is the collective name for a group of historic buildings in Purfleet, Thurrock, Essex, which was used as a farm for hundreds of years, with a Grade II listed house and barn, but with the addition of one of the best dovecotes (dove houses) in Southern England, which is a Scheduled Ancient Monument and notable for its nest box array.  This property includes the house, coachman's cottage, chaise house, stable, granary, barn, workshop, cart sheds, dovecote, and inner and outer walled gardens.  Known by many names in its past, the farm has been called Le Vineyards, because grape vines were grown on one of its south facing slopes.  Its current name comes from the fact that it is a house 'High' on the hill, which commanded great views over the River Thames.

Supporting paragraphs: Imagine (1972 film) Tittenhurst Park
Answer: Tittenhurst Park