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 is some discussion as to whether achromats can see color or not. As illustrated in The Island of the Colorblind by Oliver Sacks, some achromats cannot see color, only black, white, and shades of grey. With five different genes currently known to cause similar symptoms, it may be that some do see marginal levels of color differentiation due to different gene characteristics. With such small sample sizes and low response rates, it is difficult to accurately diagnose the 'typical achromatic conditions'. If the light level during testing is optimized for them, they may achieve corrected visual acuity of 20/100 to 20/150 at lower light levels, regardless of the absence of color. One common trait is hemeralopia or blindness in full sun. In patients with achromatopsia, the cone system and fibres carrying color information remain intact. This indicates that the mechanism used to construct colors is defective.
 Question: is it possible to only see black and white Context: The humanzee (Homo sapiens sapiens × Pan) is a hypothetical chimpanzee/human hybrid. An unsuccessful attempt to breed such a hybrid was made by Ilya Ivanovich Ivanov in the 1920s.
 Question: has there ever been a human chimp hybrid Context: An artery (plural arteries) (from Greek ἀρτηρία (artēria), meaning 'windpipe, artery') is a blood vessel that takes blood away from the heart to all parts of the body (tissues, lungs, etc). Most arteries carry oxygenated blood; the two exceptions are the pulmonary and the umbilical arteries, which carry deoxygenated blood to the organs that oxygenate it. The effective arterial blood volume is that extracellular fluid which fills the arterial system.
 Question: does arteries carry blood away from the heart Context: The 2018 FIFA World Cup is the 21st FIFA World Cup, a quadrennial international football tournament contested by the men's national teams of the member associations of FIFA. It is currently ongoing in Russia starting from 14 June and will end with the final match on 15 July 2018. The country was awarded the hosting rights on 2 December 2010.
 Question: is there going to be a world cup 2018 game Context: Damon Salvatore is a fictional character in The Vampire Diaries novel series. He is portrayed by Ian Somerhalder in the television series. Initially, Damon is the main antagonist in the beginning of the show and later became a protagonist. After the first few episodes, Damon begins working alongside his younger brother, Stefan Salvatore, to resist greater threats and gradually Elena begins to consider him a friend. His transition was completed after his younger brother Stefan, who is also a vampire, convinces him to drink blood. Damon thus vows to make his brother's life sorrowful -- thus further causing a century-long rift between the two brothers, centering around Katherine and eventually a love triangle with Elena Gilbert. After on-again/off-again relationship with both brothers, Elena chooses to be with Damon in the series finale.
 Question: do elena and damon date in vampire diaries
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