Problem: As of the 2010 U.S. Census, there were 113,934 people, 20,502 families, and 47,060 households residing in the city. The population density was 4,093.9 people per square mile (1,580.7/km²), making it less densely populated than Detroit proper and its inner-ring suburbs like Oak Park, Michigan and Ferndale, Michigan, but more densely populated than outer-ring suburbs like Livonia, Michigan and Troy, Michigan. The racial makeup of the city was 73.0% White (U.S. Census) (70.4% non-Hispanic White), 7.7% Race and ethnicity in the United States Census, 0.3% Race and ethnicity in the United States Census, 14.4% Race and ethnicity in the United States Census, 0.0%  Race and ethnicity in the United States Census, 1.0% from Race and ethnicity in the United States Census, and 3.6% from two or more races. Race and ethnicity in the United States Census or Race and ethnicity in the United States Census residents of any race made up 4.1% of the population. Ann Arbor has a small population of Arab Americans, including  students as well as local Lebanese Americans and Palestinian Americans.

Which group is smaller for the city according to the census: people or families?
Answer: families

Problem: In the county, the population was spread out with 23.70% under the age of 18, 15.50% from 18 to 24, 26.50% from 25 to 44, 21.80% from 45 to 64, and 12.50% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 93.50 males. For every 100 females age 18 and over, there were 90.00 males.

How many in percent from the county weren't 45 to 64?
Answer: 78.2

Problem: With the rapid growth and consolidation of large railroad systems after 1870, union organizations sprang up, covering the entire nation. By 1901, 17 major railway brotherhoods were in operation; they generally worked amicably with management, which recognized their usefulness. Key unions included the Brotherhood of Locomotive Engineers , Brotherhood of Maintenance of Way Division , the Order of Railway Conductors, the Brotherhood of Locomotive Firemen, and the Brotherhood of Railroad Trainmen. Their main goal was building insurance and medical packages for their members, and negotiating bureaucratic work rules that favored their membership, such as seniority and grievance procedures. They were not members of the AFL, and fought off more radical rivals such as the Knights of Labor in the 1880s and the American Railroad Union in the 1890s. They consolidated their power in 1916, after threatening a national strike, by securing the Adamson Act, a federal law that provided 10 hours pay for an eight-hour day. At the end of World War I they promoted nationalization of the railroads, and conducted a national strike in 1919. Both programs failed, and the brotherhoods were largely stagnant in the 1920s. They generally were independent politically, but supported the third party campaign of Robert M. La Follette Sr. in 1924.

How many key railroad unions were there?
Answer: 5

Problem: The month-long truce went into effect on 11 June, 1948. On the same day, the first group of 36 observers arrived via Cairo, Egypt and continued to arrive for the next three days. The first truce did not last long due to widespread violence which again erupted. As a result, the observers were withdrawn on 9 July 1948. The second truce, indefinite in length, was called by the United Nations Security Council on 15 July 1948. This declaration was to be put into effect on 18 July 1948. It was from United Nations Security Council Resolution 54 that the Mediator was instructed to supervise the observance of the truce and to establish procedures for examining alleged breaches of the truce since 11 June 1948, and authorized the Mediator to deal with breaches so far as it was within the capacity of the Mediator to do so by appropriate local action, also the Security Council Resolution 54 requested the Mediator to keep the Security Council informed concerning the operation of the truce and where necessary to take appropriate action. During the autumn of 1948, UNTSO was re-established with an increase in size to supervise the Second Truce. The first group of observers to serve in Palestine under the UN Mediator, Count Folke Bernadotte, arrived in Rhodes at 6 P.M. GMT 20 July. It included 41 Americans and about 25 Belgians and were deployed on 21 July 1948. The initial group was quickly expanded to 93 in total because of the tremendous area that had to be covered. As the number of personnel grew, the United Nations Secretariat (of Personnel) supported the creation of the United Nations Truce Supervision Organization (UNTSO), the same organization UN Military Observers are assigned to today. Initially, the command was headed by a Chief-of-Staff (a general officer from one of the participating countries) in accordance with the personal direction of the Mediator, (a civilian).

How many months did the observers stay before they were removed due to the eruption of violence?
Answer:
1