Question: Eloise Cemetery was the name applied to cemeteries used by a hospital complex named after a post office that opened in what year?

Context paragraphs:
General Post Office, Belgrade: Main Post Office Building in Belgrade is located on the corner of Takovska Street and Boulevard of Kralj Aleksandar, close to the National Assembly, the building of the President of Serbia (the building of the New Palace) and the Belgrade City Assembly (the building of the Old Palace).  It is one of the most representative buildings of the most important state institution for postal traffic and services.  It was constructed in the period from 1935 to 1938 as the palace of the Post Office Savings Bank, the Main Post Office and the Main Telegraph.  Since the completion of the work to date, the part of the palace from Takovska Street designed for the work of the Main Post Office has not changed its basic purpose.  On the other hand, the part of the palace from Boulevard of Kralj Aleksandar in which the Post Office Savings Bank was located, from 1946 to September 2006, was used to house the National Bank until its relocation to a new facility on Slavija Square.  Since 2003, some ministries of the Republic of Serbia were located in this building, and since 2013, it is used by the Constitutional Court of Serbia.  The same year, in 2013, the Palace of the Main Post Office was declared a cultural monument.

Eloise Cemetery: Eloise Cemetery was the name applied to cemeteries used by the Eloise hospital complex located in what was then Nankin Township in western Wayne County, Michigan, and is now Westland, Michigan.  The patients buried in the cemetery were from the Infirmary Division, the William P. Seymour General Hospital, the T.B. Sanitarium and the Eloise Hospital (Psychiatric Division).  In the United States at the dawn of the 20th century, tuberculosis was the leading cause of death, and that was true here.  The majority of burials were from the Infirmary Division which was the largest of the three divisional housing up to 7,000 patients at a time.  Most burials were of adult males, but there are women and a few infants and children.

United States Post Office (Palo Alto, California): The U.S. Post Office, located at 380 Hamilton Ave., is the main post office in Palo Alto, California.  The post office was constructed from 1932 to 1933 and was designed by Palo Alto architect Birge M. Clark; during the Great Depression, the Post Office department hired local architects to design post offices rather than designing them in Washington.  The building was designed in the Mediterranean Revival style and features a tile hip roof in varying shades of red, an open arcade with round arches in the front, and round arched entryways at both ends of the arcade.  The entries have bronze frames and decorative bronze transoms; the doors were originally bronze as well but were replaced with lighter metals.  While the Mediterranean Revival style was at the time an unusual choice for a post office, it was widely used in Palo Alto and at Stanford University; the post office is one of the few that reflect regional architecture.

Kingfisher Post Office: The Kingfisher Post Office, also known as The Old Post Office, is the historic former post office in Kingfisher, Oklahoma.  The post office was built by the Dieter & Wenzil Co. of St. Louis, Missouri; work on the building began on October 1, 1912, and finished on September 1, 1913.  The stucco building has a red-tile hipped roof and cornices on each side.  The post office operated until a larger post office opened in 1976.

Assistens Cemetery: Assistens Cemetery (Danish: "Assistens Kirkegård" ) is the name of a number of cemeteries in Denmark.  The common nominator is, as the first part of the name implies (Latin: "assistens" meaning assisting), an assisting cemetery for a town's churches.  Already by the end of the 17th century, Danish authorities deemed that the conditions for inner-city cemeteries were becoming increasingly unacceptable.  Not only was the space becoming limited but it was also deemed unhygienic to conduct burial in the inner-city.  The solution was to erect shared cemeteries in the outskirt of a town, named Assisting Cemetery, primarily in larger towns.  The first of these in Nørrebro, Copenhagen, was founded by royal resolution on May 26, 1757 and inaugurated November 6, 1760.

Eloise (psychiatric hospital): Eloise was a large complex located in Westland.  The name came from the post office on the grounds which opened July 20, 1894 and was named after Eloise Dickerson Davock, daughter of Detroit's postmaster.

Halifax County Home and Tubercular Hospital: The Halifax County Home and Tubercular Hospital is a historic hospital complex and national historic district located near Halifax, Halifax County, North Carolina.  The listing included nine contributing buildings, two contributing sites and one contributing structure including the site of the first (ca. 1845) Halifax County home and cemetery, the 1923 county home, and its neighbor, the county tubercular hospital, completed in 1925.  Other contributing resources are domestic and agricultural outbuildings.  The county home was designed by noted architects Benton & Benton and is a Neoclassical brick building composed of a two-story central pavilion with one-story hyphenated wings.  The tubercular hospital is a one-story brick building with a gable roof.  The hospital closed in 1973.  The tubercular hospital has been destroyed.

Ochopee Post Office: The Ochopee Post Office is the smallest post office in the United States.  It is a tiny shed on U.S. Route 41 near Ochopee, Florida, 34141-9998.  It is located about 3 mi east of the intersection of US 41 and State Road 29.  The building used to be a storage facility for irrigation pipes of an adjacent tomato farm.  It was converted into a post office in 1953, after a fire which destroyed Ochopee's previous post office located in the Gaunt Company Store.  The post office is currently fully functional, serving the surrounding populations of Miccosukee and Seminole Indians.  The local post clerk is often asked for the famous Ochopee post mark.

Tonopah Main Post Office: The Tonopah Main Post Office, also known as US Post Office–Tonopah Main, is the main post office in Tonopah, Nevada.  Built in 1941, the post office was the first and only federally constructed post office in the city.  The post office was designed in a Starved Classical style typical of federal buildings of the era.  The government began planning the post office in 1937, and its site was chosen in 1940.  The building's cornerstone was laid in May 1941; a civic ceremony and parade marked the occasion.  The post office opened for business on December 7, 1941, the same day as the attack on Pearl Harbor.  In addition to serving as Tonopah's post office, the building also houses government offices in its basement.

Arkwright, Alabama: Arkwright is an unincorporated community in Shelby County, Alabama, United States.  The community lies near the banks of the Coosa River and partially within the city limits of Vincent.  Arkwright was founded in 1907 and was named for Preston Stanley Arkwright, who served as founder and president of Georgia Railway and Power Company and as an official with the Atlanta, Birmingham and Atlantic Railway.  At one point, the community was home to a railroad station, post office, bank, cotton gin, gristmill, general store, furniture store, and school.  The post office was in operation from 1909 to 1926.  In 1924, the railroad company raised the railroad bed, eliminating the need for a depot.  The population soon began to decline and the post office was closed shortly afterwards.  The Arkwright Baptist Church and Arkwright Heritage Area, which includes multiple structures and cemeteries, were added to the Alabama Register of Landmarks and Heritage in 2011.

Supporting paragraphs: Eloise Cemetery Eloise (psychiatric hospital)
Answer: 1894