Question: How large is the Maine farm that was a major project of the Libra Foundation?

Context paragraphs:
Libra Foundation: The Libra Foundation is among the largest charitable organizations in the state of Maine.  Major projects include Pineland Farms, the Maine Winter Sports Center, and The MaineHealth Raising Readers program.  The October Corporation is an affiliated organization with real estate holdings on behalf of the Libra Foundation.

Jamia Nusrathul Islam: Jamia Nusrathul Islam is an Islamic university in Kerela, India.  This institution has been active since 1997 and is located in Randathani, Malappuram in India.  The foundation stone was laid by an Islamic scholar, OK Usthad.  The university has roughly 1,043 students studying under different institutes.  OK Usthad Research Center is the major project of the Jamia.  The research center can conduct academic conferences.

Western Libyan Gas Project: The Western Libyan Gas Project (WLGP) is a 50-50 joint venture between the Libyan National Oil Corporation (NOC) and the Italian company Eni which came online in October 2004.  By July 2007, 280 e9cuft per year of natural gas was being exported from a processing facility at Melitah, on the Libyan coast, through the Greenstream pipeline to southeastern Sicily.  From Sicily, the natural gas travels to the Italian mainland, and then onwards to the rest of Europe.  WLGP is the first major project to valorize the natural gas produced in Libya through export to and marketing in Europe.  WLGP is supplied from production at the Bahr Essalam and Wafa fields, which is processed at the onshore Mellitah treatment plant.

New York Tunnel Extension: The New York Tunnel Extension (also New York Improvement and Tunnel Extension), was a major project of the Pennsylvania Railroad (PRR) at the beginning of the 20th century, to improve railroad access throughout the greater New York City area.  The project comprised tunnels and approaches from New Jersey and Long Island to Midtown Manhattan, leading to the PRR's massive new station, New York Penn Station.

Norris Dam: Norris Dam is a hydroelectric and flood control structure located on the Clinch River in Anderson County and Campbell County, Tennessee, United States.  Its construction in the mid-1930s was the first major project for the Tennessee Valley Authority, which had been created in 1933 to bring economic development to the region and control the rampant flooding that had long plagued the Tennessee Valley.  The dam was named in honor of Nebraska Senator George Norris (1861–1944), a longtime supporter of government-owned power in general, and supporter of TVA in particular.  The project infrastructure was listed on the National Register of Historic Places in 2016.

Pineland Farms: Pineland Farms is a 5,000 acre farm and recreational property in the eastern part of New Gloucester, Maine that is the site of the former Pineland Hospital and Training Center.

Zhengfa Yanzang: Zhengfa Yanzang (Hànyǔ Pīnyīn: Zhèngfǎ Yǎnzàng; Rōmaji: Shōbōgenzō), known in English as the Treasury of the Correct Dharma Eye or by the Japanese reading of its title, Shōbōgenzō, is a collection of "kōan"s compiled by Dahui Zonggao.  Dahui was a famous popularizer of "kōan"s during the Song Dynasty in China.  Dahui's collection is composed of three scrolls prefaced by three short introductory pieces.  Dahui's work uses the same Chinese characters for its title as the now well known Shōbōgenzō written by the Japanese monk Eihei Dōgen in the thirteenth century.  Upon arriving in China, Dōgen first studied under Wuji Lepai, a disciple of Dahui, which is where he probably came into contact with Dahui's "Zhengfa Yanzang".  In his book "Dogen's Manuals of Zen Meditation", the modern scholar Carl Bielefeldt acknowledges that Dōgen likely took the title from Dahui for his own "kōan" collection, the Shinji Shōbōgenzō, and kept it for his later and now most well-known work, the Kana Shōbōgenzō (usually referred to simply as "the Shōbōgenzō"): Indeed the fact that Dōgen styled his effort "Shōbō genzō" suggests that he had as his model a similar compilation of the same title by the most famous of Sung masters, Ta-Hui Tsung-kao [Dahui Zonggao].  Unlike the latter, Dōgen was content here simply to record the stories without interjecting his own remarks.  A few years later, however, he embarked on a major project to develop extended commentaries on many of these and other passages from the Ch'an literature.  The fruit of this project was his masterpiece—the remarkable collection of essays known as the kana, or "vernacular", Shōbō genzō.

J. F. White Contracting Co.: J. F. White Contracting Co. is a contracting company that has done work in the New England area of America.  It was founded in 1924 by Joseph F. White, Sr..  The company excavated the foundations for the Statler Hotel & Office Building, the Aetna Headquarters, the Sears Building in Boston, the Harvard Business School, the Fogg Art Museum and Foxboro Stadium.  In 1945, White's sons Tom White, Joseph White Jr. and John White returned from World War II and took over the business.  The Charles River dam project was their first major project.  The company also found work on the Boston Big Dig project.  The company's corporate headquarters are located in Framingham, Massachusetts.

Kolwezi tailings project: The Kolwezi tailings project is a major project in the Kolwezi mining area of the Democratic Republic of the Congo (DRC) to recover copper from the tailings, or processed ore, from mining in the region since the 1950s.

Northern Farm: Northern Farm: A Chronicle of Maine is a 1948 book by naturalist/writer Henry Beston.  It chronicles a season on a small Maine farm.  Beston is also the author of "The Outermost House".

Supporting paragraphs: Libra Foundation Pineland Farms
Answer: 5,000 acre