Context: Death from laughter is a rare form of death, usually resulting from cardiac arrest or asphyxiation, caused by a fit of laughter. Instances of death by laughter have been recorded from the times of ancient Greece to the modern day.
 Question: can you have a heart attack from laughing Context: St. Bernard dogs are no longer used for Alpine rescues, the last recorded instance of which was in 1955. As late as 2004, the Great St Bernard Hospice still retained 18 of the dogs for reasons of tradition and sentiment. In that year the Barry Foundation created breeding kennels for the breed at the town of Martigny down the Great Saint Bernard Pass, and purchased the remaining dogs from the Hospice. During the summer months each year a number of the animals are temporarily relocated from Martigny to the Hospice for viewing by tourists.
 Question: are st bernards still used as rescue dogs Context: In blood, the serum (/ˈsɪərəm/) is the component that is neither a blood cell (serum does not contain white or red blood cells) nor a clotting factor; it is the blood plasma not including the fibrinogens. Serum includes all proteins not used in blood clotting (coagulation) and all the electrolytes, antibodies, antigens, hormones, and any exogenous substances (e.g., drugs and microorganisms).
 Question: is blood serum the same as blood plasma Context: On September 30, 2015, when Ford's shares had sunk to a little over 2% due to stock dilution, Ford sold its remaining shares in Mazda.
 Question: does ford still have a stake in mazda Context: On July 28, 2014, Dollar Tree announced that it would buy Family Dollar for $8.5 billion. The sale delivered a windfall to the company's biggest shareholder Carl Icahn, who acquired his 9.4 percent stake in June 2014. On January 22, 2015, Family Dollar shareholders approved the Dollar Tree bid.
 Question: is dollar tree and family dollar the same company Context: A semi-presidential system or dual executive system is a system of government in which a president exists alongside a prime minister and a cabinet, with the latter being responsible for the legislature of a state. It differs from a parliamentary republic in that it has a popularly elected head of state, who is more than a purely ceremonial figurehead, and from the presidential system in that the cabinet, although named by the president, is responsible to the legislature, which may force the cabinet to resign through a motion of no confidence.
 Question: can a country have both a president and a prime minister Context: Serein (/sɪˈriːn/; (səʁɛ̃) in French) refers to rain falling from a cloudless sky. This sort of rain is said to take on the form of a fine, light drizzle, typically after dusk. The name derives from French serein, meaning ``serene'', or ``clear'' (as in unclouded). An alternative etymology is from Old French serain, evening.
 Question: can it rain without clouds in the sky Context: A mule is the offspring of a male donkey (jack) and a female horse (mare). Horses and donkeys are different species, with different numbers of chromosomes. Of the two F1 hybrids (first generation hybrids) between these two species, a mule is easier to obtain than a hinny, which is the offspring of a female donkey (jenny) and a male horse (stallion).
 Question: is a donkey and a mule the same thing
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