Question: How many acres is the park that Waltham Town Lock is located in?
Context: Waltham Common Lock (No 10) is a lock on the River Lee Navigation at Waltham Cross.  The lock is located in the River Lee Country Park which is part of the Lee Valley Park and stands close to the Showground site now known as the Broxbourne White Water Canoe Centre - venue of the 2012 Olympics canoeing event.  At the tail of the lock is the Powdermill Cut dug in 1806 to connect the Waltham Abbey Royal Gunpowder Mills directly to the then-new Navigation. Lee Valley Regional Park is a 10000 acre 26 mi long linear park, much of it green spaces, running through the northeast of Greater London, Essex and Hertfordshire from the River Thames to Ware, through areas such as Stratford, Clapton, Tottenham, Enfield, Walthamstow, Cheshunt, Broxbourne and Hoddesdon in an area generally known as the Lea Valley.  Greater London's largest park, Lee Valley Park is more than four times the size of Richmond Park, extending beyond Greater London's borders into the neighbouring counties of Hertfordshire and Essex. Camden Lock is a small part of Camden Town, London Borough of Camden, England, which was formerly a wharf with stables on the Regent's Canal.  It is immediately to the north of Hampstead Road Locks, a twin manually operated lock.  The twin locks together are "Hampstead Road Lock 1"; each bears a sign so marked.  Hawley Lock and Kentish Town Lock are a short distance away to the east, while to the west there is a long level pound, and it is 27 mi to the next lock. Ginter Park is a suburb neighborhood of Richmond, Virginia built on land owned and developed by Lewis Ginter.  The neighborhood's first well known resident was newspaperman Joseph Bryan, who lived in Laburnum, first built in 1883 and later rebuilt .  In 1895, many acres of land north of Richmond were purchased by Ginter in order to develop into neighborhoods.  Ginter Park and other neighborhoods were developed from this initial land purchase.  In Ginter Park are Union Theological Seminary & Presbyterian School of Christian Education and as well as Pollard Park. Enfield Lock is an area in the London Borough of Enfield, north London.  It is approximately located east of the Hertford Road between Turkey Street and the Holmesdale Tunnel overpass, and extends to the River Lee Navigation, including the Enfield Island Village.  The locality gains its name from the lock on the River Lee Navigation.  Today's Enfield Lock was rebuilt in 1922.  The area forms part of the Lee Valley Park and the Enfield Lock Conservation Area.  On its eastern boundary Enfield Lock has marshland formerly used as a testing site between the Royal Small Arms Factory and the Gunpowder Mills.  To the south is Brimsdown, the north Waltham Cross and to the west Bullsmoor and Freezywater.  Enfield Lock forms part of the London boundary. Kentish Town Lock is a lock on the Regent's Canal, in the London Borough of Camden. Bishop's Waltham Town Football Club was a football club based in Bishop's Waltham, Hampshire, England.  The club was affiliated to the Hampshire Football Association. Waltham Town Lock (No 11) is a lock on the River Lee Navigation at Waltham Cross, Hertfordshire.  The lock is located in the River Lee Country Park which is part of the Lee Valley Park.  The adjoining Showground site now known as the Broxbourne White Water Canoe Centre has been chosen to host the canoeing event in the 2012 Summer Olympics. The Preserve at Sharp Mountain (also called The Sharp Mountain Preserve) is a nature-based community located near Jasper, Georgia in Pickens County.  It is one of three mountain communities in Pickens County, and the only one dedicated to maintaining its natural amenities.  There are 12 mi of paved roads running through the community, but the population density is intentionally low (approximately 300 lots over 1600 acre ranging in size from a minimum of 3 acre to a maximum of 37 acres.)  The Preserve at Sharp Mountain was named the "Best Community for Outdoor Lovers" by Pinnacle Living magazine, Unlike many planned communities, the Preserve at Sharp Mountain does not have swimming pools and tennis courts with club houses or golf courses.  Instead, the Preserve at Sharp Mountain offers many acres of green space, hiking and nature trails, a nature pavilion, waterfalls, a bird sanctuary, a butterfly garden and various nature parks.  The community is gated to restrict use of its 12 mi of privately owned roads to those living in the community.  The Preserve at Sharp Mountain was developed by Four Seasons originally, which later became Naterra Land.  Naterra's stated goal in all of its projects is "to better connect people with nature."  Naterra Land sold out all of its inventory in the Preserve, and control of the community is now governed by a Property Owners' Association (POA).  In 2011, the Preserve Association switched from being an HOA (Home Owners' Association) to being a POA (Property Owners' Association), each being viewed differently under Georgia law.  In 2008 the Preserve became a recognized member of the national Firewise communities program and is one of the 13 in Georgia. Bermuda Hundred was the first incorporated town in the English colony of Virginia.  It was founded by Sir Thomas Dale in 1613, six years after Jamestown.  At the southwestern edge of the confluence of the Appomattox and James Rivers opposite City Point, annexed to Hopewell, Virginia in 1923, Bermuda Hundred was a port town for many years.  The terminology "Bermuda Hundred" also included a large area adjacent to the town.  In the colonial era, "hundreds" were large developments of many acres, arising from the English term to define an area which would support one hundred homesteads.  The port at the town of Bermuda Hundred was intended to serve other "hundreds" in addition to Bermuda Hundred.
Answer: 10000