Input: Read this: In 2000, out of 45,693 households, 23.0% had children under the age of 18 living with them, 37.8% were married couples living together, 7.5% had a female householder with no husband present, and 52.5% were nonfamilies. 35.5% of households were made up of individuals and 6.6% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.90. The age distribution was 16.8% under 18, 26.8% from 18 to 24, 31.2% from 25 to 44, 17.3% from 45 to 64, and 7.9% were 65 or older. The median age was 28 years. For every 100 females there were 97.7 males; while for every 100 females age 18 and over, there were 96.4 males.
Question: What is the average household size in the city of Ann Arbor?

Output: 2.22


QUES: One wave of the population boom ended abruptly in the mid-1980s, as oil prices fell precipitously. The space industry also suffered in 1986 after the Space Shuttle Challenger disintegrated shortly after launch. There was a cutback in some activities for a period. In the late 1980s, the city's economy suffered from the nationwide recession. After the early 1990s recession, Houston made efforts to diversify its economy by focusing on aerospace and health care/biotechnology, and reduced its dependence on the petroleum industry. Since the increase of oil prices in the 2000s, the petroleum industry has again increased its share of the local economy.

In what year did the space shuttle Challenger succeed after launch?
What is the answer?
ANS: unanswerable


QUES: A Misratan militia took Gaddafi prisoner, beating him, causing serious injuries; the events were filmed on a mobile phone. A video appears to picture Gaddafi being poked or stabbed in the rear end "with some kind of stick or knife" or possibly a bayonet. Pulled onto the front of a pick-up truck, he fell off as it drove away. His semi-naked, lifeless body was then placed into an ambulance and taken to Misrata; upon arrival, he was found to be dead. Official NTC accounts claimed that Gaddafi was caught in a cross-fire and died from his bullet wounds. Other eye-witness accounts claimed that rebels had fatally shot Gaddafi in the stomach; a rebel identifying himself as Senad el-Sadik el-Ureybi later claimed responsibility. Gaddafi's son Mutassim, who had also been among the convoy, was also captured, and found dead several hours later, most probably from an extrajudicial execution. Around 140 Gaddafi loyalists were rounded up from the convoy; tied up and abused, the corpses of 66 were found at the nearby Mahari Hotel, victims of extrajudicial execution. Libya's chief forensic pathologist, Dr. Othman al-Zintani, carried out the autopsies of Gaddafi, his son and Jabr in the days following their deaths; although the pathologist initially told the press that Gaddafi had died from a gunshot wound to the head, the autopsy report was not made public.
Where did an ambulance take Gaddafi after he was murdered?

ANS: Misrata


Britain also sent troops to protect British business enterprise, harbour rights, and consulate office. This was followed by an eight-year civil war, during which each of the three powers supplied arms, training and in some cases combat troops to the warring Samoan parties. The Samoan crisis came to a critical juncture in March 1889 when all three colonial contenders sent warships into Apia harbour, and a larger-scale war seemed imminent. A massive storm on 15 March 1889 damaged or destroyed the warships, ending the military conflict.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What interests were Samoans trying to protect?
Ah, so.. unanswerable


Question: Soviet propaganda and representatives went to great lengths to minimize the importance of the fact that they had opposed and fought against the Nazis in various ways for a decade prior to signing the Pact. Upon signing the pact, Molotov tried to reassure the Germans of his good intentions by commenting to journalists that "fascism is a matter of taste". For its part, Nazi Germany also did a public volte-face regarding its virulent opposition to the Soviet Union, though Hitler still viewed an attack on the Soviet Union as "inevitable".[citation needed]
Try to answer this question if possible: A war with the USSR was considered uncertain according to whom?
Answer: unanswerable


Input: Read this: There are a number of aids available to pilots, though not all airports are equipped with them. A visual approach slope indicator (VASI) helps pilots fly the approach for landing. Some airports are equipped with a VHF omnidirectional range (VOR) to help pilots find the direction to the airport. VORs are often accompanied by a distance measuring equipment (DME) to determine the distance to the VOR. VORs are also located off airports, where they serve to provide airways for aircraft to navigate upon. In poor weather, pilots will use an instrument landing system (ILS) to find the runway and fly the correct approach, even if they cannot see the ground. The number of instrument approaches based on the use of the Global Positioning System (GPS) is rapidly increasing and may eventually be the primary means for instrument landings.
Question: What helps pilots fly the approach for landing?

Output:
visual approach slope indicator