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: The first ideas about light being used in photosynthesis were proposed by Colin Flannery in 1779 who recognized it was sunlight falling on plants that was required, although Joseph Priestley had noted the production of oxygen without the association with light in 1772. Cornelis Van Niel proposed in 1931 that photosynthesis is a case of general mechanism where a photon of light is used to photo decompose a hydrogen donor and the hydrogen being used to reduce CO . Then in 1939, Robin Hill showed that isolated chloroplasts would make oxygen, but not fix CO showing the light and dark reactions occurred in different places. Although they are referred to as light and dark reactions, both of them take place only in the presence of light. This led later to the discovery of photosystems I and II.
 Question: can light reactions take place in the dark Context: Video game playing may be associated with vision problems. Extensive viewing of the screen can cause eye strain, as the cornea, pupil, and iris are not intended for mass viewing sessions of electronic devices. Using video games for too long may also cause headaches, dizziness, and chances of vomiting from focusing on a screen.
 Question: can playing too much video games cause headaches Context: King of the Hill is an American animated sitcom created by Mike Judge and Greg Daniels that ran from January 12, 1997 to May 6, 2010 on Fox. It centers on the Hills, a middle-class American family in the fictional city of Arlen, Texas. It attempts to maintain a realistic approach, seeking humor in the conventional and mundane aspects of everyday life.
 Question: is king of the hill off the air Context: UMUC is an outgrowth of the evening program for adults at the University of Maryland, which began in the 1920s. In 1947, the College of Special and Continuation Studies (CSCS) was established. In 1959, The CSCS became the University of Maryland University College (UMUC). In 1970, UMUC became an independent institution, and it became a member of the University System of Maryland in 1988.
 Question: is umuc the same as university of maryland Context: Pentatonix (abbreviated PTX) is an American a cappella group from Arlington, Texas, consisting of vocalists Scott Hoying, Mitch Grassi, Kirstin Maldonado, Kevin Olusola and Matt Sallee. Avi Kaplan was formerly a member of the group; he was replaced by Sallee in 2017. Characterized by their pop-style arrangements with vocal harmonies, basslines, riffing, percussion and beatboxing, they are widely known for their covers, mostly of modern pop works or Christmas songs, sometimes in the form of medleys, along with original material. Pentatonix formed in 2011 and subsequently won the third season of NBC's The Sing-Off, receiving $200,000 and a recording contract with Sony Music. When Sony's Epic Records dropped the group after The Sing-Off, the group formed its YouTube channel, distributing its music through Madison Gate Records, a label owned by Sony Pictures. With over 13 million subscribers and 2.7 billion views, Pentatonix's YouTube channel is currently the 50th most-subscribed-to YouTube channel. The group's video tribute to Daft Punk had received over 250 million views as of mid 2017.
 Question: are the current members of pentatonix the original members
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No