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: There are many factors, such as the source, the identification or the definition of the mouth, and the scale of measurement of the river length between source and mouth, that determine the precise meaning of ``river length''. As a result, the length measurements of many rivers are only approximations (see also coastline paradox). In particular, there has long been disagreement as to whether the Nile or the Amazon is the world's longest river. The Nile has traditionally been considered longer, but in recent years some Brazilian and Peruvian studies have suggested that the Amazon is longer by measuring the river plus the adjacent Pará estuary and the longest connecting tidal canal.
 Question: is mississippi the longest river in the world Context: In accounting and finance, earnings before interest and taxes (EBIT), is a measure of a firm's profit that includes all expenses except interest and income tax expenses. It is the difference between operating revenues and operating expenses. When a firm does not have non-operating income, operating income is sometimes used as a synonym for EBIT and operating profit.
 Question: is ebitda the same as profit before tax Context: The name ``Jerry'' was chosen by MGM animator John Carr, who submitted ``Tom and Jerry'' as potential names for the duo after an important Loews Inc. distributor in Texas asked for follow-ups to Puss Gets the Boot. While the idea of a cat-and-mouse duo was considered shopworn by the 1940s, Hanna and Barbera decided to expand upon the standard expected hunter/prey relationship. Their Jerry Mouse, an ``incurable scene stealer'', served more or less as the protagonist of most of the films; instead of being a ``cowering victim'' of his pursuer, Tom, he took delight in besting, and often torturing, his antagonist (though sometimes, Tom is just following orders or is even just minding his own business and is antagonized by Jerry). Hanna and Barbera considered Tom and Jerry ``the best of enemies'', whose rivalry hid an unspoken amount of mutual respect.
 Question: is jerry a girl on tom and jerry Context: A consumer unit is a type of distribution board (a component of an electrical power system within which an electrical power feed provides supply to subsidiary circuits).
 Question: is a distribution board the same as a consumer unit Context: In the spring of 492 BC an expeditionary force, to be commanded by Darius's son-in-law Mardonius, was assembled, consisting of a fleet and a land army. Whilst the ultimate aim was to punish Athens and Eretria, the expedition also aimed to subdue as many of the Greek cities as possible. Departing from Cilicia, Mardonius sent the army to march to the Hellespont, whilst he travelled with the fleet. He sailed round the coast of Asia Minor to Ionia, where he spent a short time abolishing the tyrannies that ruled the cities of Ionia. Ironically, since the establishment of democracies had been a key factor in the Ionian Revolt, he replaced the tyrannies with democracies.
 Question: the persian empire attacked greece by both land and sea
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