Question: In which county is the Engineers Country Club located ?

Context paragraphs:
North Ridge Country Club: North Ridge Estates & Country Club is a residential neighborhood and country club located in northern Raleigh, North Carolina off Falls of the Neuse Road.  Besides the two golfcourses, North Ridge Country Club has a pool and swim clubhouse, a 70000 sqft club house, tennis courts, restaurant, tennis club house, and a fitness center.

Engineers Country Club: Engineers Country Club is a country club located in Roslyn Harbor, New York, on the historic Gold Coast on the north shore of Long Island.

Hermitage Country Club: Hermitage Country Club is a country club located in eastern Goochland County, in the Richmond, Virginia area.  The club was founded in 1900 by Berkely Williams, making it the 4th oldest country club in Virginia.  The club hosted the PGA Championship in 1949, at the course that later became Henrico County's Belmont Golf Course.  Sam Snead won his second PGA Championship that year with a 3&2 victory over Johnny Palmer in the final match.  The club remains the only club from Virginia to have hosted a major championship.  Hermitage has a large pool, 4 indoor & 4 outdoor tennis courts, 36 hole golf course, weight room, and two spectacular dining rooms.

Flossmoor Country Club: Flossmoor Country Club is a private country club located in Bloom Township, Cook County, just outside the village limits of Flossmoor, Illinois.  Founded in 1899 as Homewood Country Club and designed by Herbert J. Tweedie, its name was later changed to Flossmoor.

Roslyn Harbor, New York: Roslyn Harbor is a village in Nassau County, New York, United States.  The population was 1,051 at the 2010 census.  It is considered part of the Greater Roslyn area, which is anchored by the village of Roslyn.

Norwood Hills Country Club: Norwood Hills Country Club, also known as North Hills Country Club, is a country club located in Jennings, Missouri.  Norwood Hills Country Club has a rich tradition and history dating back to the 1920s, when Norwood found its beginning as North Hills Country Club.  It has an excellent youth golf program, and is the home course to Lutheran North High School.  Norwood is very youth oriented and friendly.  It is also known for its high value to cost ratio compared to other area country clubs.  The club has hosted many prestigious events including the National Left-Handed Golfer’s Championship in 1936 and 1940, the PGA Championship in 1948 won by Ben Hogan, the LPGA Tour's St. Louis Women's Invitational from 1965 to 1969, the PGA Tour's Greater St. Louis Golf Classic in 1972 and 1973, and the U.S. Senior Amateur in 2001.

1919 PGA Championship: The 1919 PGA Championship was the second PGA Championship, which is now considered one of golf's major championships.  It was held September 16–20 at the Engineers Country Club in Roslyn Harbor, New York, east of New York City on Long Island in Nassau County.

Forest Hills Country Club: Forest Hills Country Club is a historic country club located in Wayne Township, Wayne County, Indiana.  The clubhouse was built in 1927, and is a two-story, stuccoed, Tudor Revival style building.  It has a cross-gable roof with half-timbering on the gable ends.  William H. (Bill) Diddel designed a nine-hole golf course for the Forest Hills Country Club in 1927.  In 1931, the club brought Diddel back to add another nine holes.  Also on the property are the contributing swimming pool, two maintenance buildings, and two shelters.

Phoenix Country Club: Phoenix Country Club is a country club located in Phoenix, Arizona.  The club was founded in 1900 and was moved to its current location in 1921.  Golf Connoisseur Magazine rated Phoenix Country Club among top 100 Most Prestigious Private Clubs in America in 2006.  The Club was chosen for the “ultimate mix of course, history, membership, tradition and class.”  In 2009 and again in 2014, Phoenix Country Club was selected by its peers as a Platinum Club of America.  The original golf course designed by Harry Collis was redesigned by Tom Lehman and John Fought in 2002.

Hillcrest Country Club (Indianapolis, Indiana): Hillcrest Country Club, also known as Avalon Country Club, is a historic country club located in suburban Lawrence Township, Marion County, Indiana, northeast of Indianapolis, Indiana.  The 18 hole golf course was designed by Bill Diddel and was built in 1924.  The clubhouse was built in 1929-1930, and renovated in 2000.  It is a three-story, Mission Revival style with tall arched openings, and a low tile roof with bracketed eaves.  Also on the property are the contributing swimming pool (1934), well house (c. 1940), and water pump (c. 1935).

Supporting paragraphs: Engineers Country Club Roslyn Harbor, New York
Answer: Nassau County