Question: How many murder victims were found on a 1000 acre+ preserve located in Allenstown, New Hampshire?

full_context: Document 1: New Bedford Highway Killer: The New Bedford Highway Killer is an unidentified serial killer responsible for the deaths of nine women and the disappearances of two additional women in New Bedford, Massachusetts, between July 1988 and June 1989. All of the killer's victims were known prostitutes and or substance abusers.
Document 2: Bear Brook State Park: Bear Brook State Park is a 10000 acre + preserve located in Allenstown, New Hampshire, and surrounding towns. It is one of New Hampshire's largest state parks.
Document 3: Pawtuckaway State Park: Pawtuckaway State Park is a 5000 acre preserve in New Hampshire, United States. It is one of the largest state parks in southeastern New Hampshire and is named for Pawtuckaway Lake and the Pawtuckaway Mountains. The park extends from the west shore of the lake to the west side of the mountains.
Document 4: Harriman State Park (New York): At 47527 acre , Harriman State Park is the second largest state park in New York. Located in Rockland and Orange counties 30 mi north of New York City, it is a haven for hikers with over 200 mi of hiking trails. The park is also known for its 31 lakes, multiple streams, public camping area, and great vistas. The park's hiking trails are currently maintained by volunteers from the New York - New Jersey Trail Conference.
Document 5: Bear Brook murders: The Bear Brook murders (also referred to as the Allenstown Four) are four unidentified female murder victims discovered in 1985 and 2000 at Bear Brook State Park in Allenstown, New Hampshire. All of the victims were either partially or completely skeletonized; they are believed to have died between 1977 and 1985.
Document 6: Backpacker murders: The backpacker murders were a spate of serial killings that took place in New South Wales, Australia, between 1989 and 1993, committed by Ivan Milat. The bodies of seven missing young people aged 19 to 22 were discovered partially buried in the Belanglo State Forest, 15 km south west of the New South Wales town of Berrima. Five of the victims were foreign backpackers visiting Australia (three German, two British), and two were Australian travellers from Melbourne.
Document 7: Edgecombe County serial killer: The Edgecombe County serial killer, also known as the Seven Bridges Killer, is an as yet unidentified serial killer in the surroundings of Edgecombe and Halifax counties in North Carolina, United States. There are ten suspected victims, all African-American women, and the remains of eight have been recovered. It is suspected that Antwan Maurice, a registered sex offender who was charged with a murder fitting a similar profile, was responsible for the Edgecombe deaths. All of the victims had a history of drugs and/or prostitution.
Document 8: Ahern State Park: Ahern State Park is a 128 acre state protected area in Laconia on Winnisquam Lake in New Hampshire's Lakes Region. It is open year round and offers hiking, non-motorized boating, biking, and fishing. It features 3500 ft of lake shoreline.
Document 9: Death of Theresa Allore: Theresa Allore was a 19-year-old Canadian college student who disappeared on Friday, November 3, 1978 from Champlain College Lennoxville in the Eastern Townships of Quebec. Five months later, on April 13, 1979, her body was discovered in a small body of water approximately one kilometer from her dormitory residence in Compton, Quebec. Upon her disappearance police initially suggested she was a runaway. When her body was discovered police then suggested that she was the possible victim of a drug overdose, perhaps with the assistance of fellow college students. In the summer of 2002, the family of Theresa Allore enlisted the support of an investigative reporter and friend, Patricia Pearson, who produced a series of articles for Canada's National Post newspaper that presented compelling evidence that Theresa Allore was a victim of murder, and that her death was possibly linked to two other unsolved local cases; the death of 10-year-old Manon Dube in March 1978, and the murder of Louise Camirand in 1977. The theory was supported by geographic profiler and then FBI consultant, Kim Rossmo, who suggested a serial sexual predator may have been operating in the Quebec region in the late 1970s and advised police to investigate the three deaths as a series. Rossmo later gained notoriety when, in 1998, he suggested that Vancouver police create a serial killer task force to investigate the multiple cases of missing women from Vancouver's downtown Eastside. Robert Pickton was eventually arrested and found guilty of six murders, though he was accused of, and implicated in, an additional 26 murders of Vancouver missing women.
Document 10: Lake Sebago: At 310 acre , Lake Sebago is the largest lake in Harriman State Park in the U.S. state of New York. The name is Algonquian for "big water". Operated by the Palisades Interstate Park Commission, Lake Sebago is surrounded by picnic lawns and play fields, and is popular with anglers fishing for landlocked salmon, lake trout, bass, perch and sunfish. The lake has a swimming beach, hand boat launch (electric motors only) and cabin camping. Lake Sebago lies near Sloatsburg. It is located just south of Lake Kanawauke and is accessible by auto from Seven Lakes Drive.
Document 11: Texarkana Moonlight Murders: The Texarkana Moonlight Murders, a term coined by the news media, references the unsolved murders committed in and around Texarkana in the spring of 1946 by an unidentified serial killer known as the "Phantom Killer", or "Phantom Slayer". The killer is credited with attacking eight people within ten weeks, five of whom were killed. The attacks happened on weekends between February 22, 1946 and May 3, 1946. The first two victims, Jimmy Hollis and Mary Larey, survived. Some police officers are not sure if their attack was connected with the murders. The first double murder, which involved Richard Griffin and Polly Ann Moore, happened four weeks later. The second double-homicide, involving Paul Martin and Betty Jo Booker, occurred exactly three weeks from the first murders. The Texas Rangers came in to investigate, including the famous M. T. "Lone Wolf" Gonzaullas. Finally, almost exactly three weeks later, Virgil Starks was killed and his wife, Katie, was severely wounded. Most officials no longer connect that attack to the other murders. Contrary to popular belief, the killer did not attack during a full moon, but did strike late at night.
Document 12: Brookline, New Hampshire: Brookline is a town in Hillsborough County, New Hampshire, United States. The population was 4,991 at the 2010 census. Brookline is home to the Talbot-Taylor Wildlife Sanctuary, Potanipo Pond, and the Brookline Covered Bridge.
Document 13: Jericho Mountain State Park: Jericho Mountain State Park (also referred to as Jericho Lake State Park) is located in the White Mountains in Berlin, New Hampshire, United States. The park was created in 2005 with the acquisition by the New Hampshire Division of Forests and Lands of two abutting properties: a 230 acre city park centered on Jericho Lake, and a 7200 acre piece of private property to the south. The city park was established in the 1970s with the construction of Jericho Lake, a flood control reservoir built to regulate the flow of the Dead River through the city center of Berlin, located downstream. The city added a small recreational park adjacent to the lake which included a beach, bath houses, picnic sites with grills, and a shelter that is still used for functions to this day. The large private parcel was acquired by the state park system to provide a location for the first network of all-terrain vehicle (ATV) trails on state land in New Hampshire. The park's namesake, 2454 ft Jericho Mountain, is located outside the park to the east.
Document 14: Vaughan Woods State Park: Vaughan Woods State Park is a public recreation area located along the Salmon Falls River on the western edge of South Berwick, Maine, at the New Hampshire border. The state park includes the restored Hamilton House, stands of old-growth forest, and 3 mi of hiking trails. The lands were bequeathed to the state by Elizabeth Vaughan in 1949.
Document 15: Mary Ann Nichols: Mary Ann "Polly" Nichols (née Walker; 26 August 1845 – 31 August 1888) was one of the Whitechapel murder victims. Her death has been attributed to the notorious unidentified serial killer Jack the Ripper, who is believed to have killed and mutilated at least five women in the Whitechapel area of London from late August to early November 1888.
ground_truth: four