Question: Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.
Is there an answer to this question: What percentage of people have chest pain when experiencing an MI?

Answer: unanswerable


Question: Plymouth is home to Plymouth Argyle F.C., who play in the fourth tier of English football league known as Football League Two. The team's home ground is called Home Park and is located in Central Park. It links itself with the group of English non-conformists that left Plymouth for the New World in 1620: its nickname is "The Pilgrims". The city also has four Non-League football clubs; Plymouth Parkway F.C. who play at Bolitho Park, Elburton Villa F.C. who play at Haye Road, Vospers Oak Villa F.C. who play at Weston Mill and Plymstock United F.C. who play at Deans Cross. All four clubs play in the South West Peninsula League.
Is there an answer to this question: What is the home field of Plymouth Argyle F.C.?

Answer: Home Park


Question: The U.S. Army currently consists of 10 active divisions as well as several independent units. The force is in the process of contracting after several years of growth. In June 2013, the Army announced plans to downsize to 32 active combat brigade teams by 2015 to match a reduction in active duty strength to 490,000 soldiers. Army Chief of Staff Raymond Odierno has projected that by 2018 the Army will eventually shrink to "450,000 in the active component, 335,000 in the National Guard and 195,000 in U.S. Army Reserve."
Is there an answer to this question: By 2018, how many active Army members will there be?

Answer: 450,000


Question: The Gold Standard Act of 1900 abandoned the bimetallic standard and defined the dollar as 23.22 grains (1.505 g) of gold, equivalent to setting the price of 1 troy ounce of gold at $20.67. Silver coins continued to be issued for circulation until 1964, when all silver was removed from dimes and quarters, and the half dollar was reduced to 40% silver. Silver half dollars were last issued for circulation in 1970. Gold coins were confiscated by Executive Order 6102 issued in 1933 by Franklin Roosevelt. The gold standard was changed to 13.71 grains (0.888 g), equivalent to setting the price of 1 troy ounce of gold at $35. This standard persisted until 1968.
Is there an answer to this question: How much was 1 troy ounce of gold worth?

Answer:
$20.67