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 Birmingham Bridge is notable for the dead end lanes that were originally to be part of a city belt system. The project was canceled and the bridge rerouted. A pedestrian walkway runs along the downstream side of the bridge, ending at steps at the south abutment of the bridge.
 Question: can you walk across the birmingham bridge in pittsburgh Context: Countries that require a passport validity of at least 1 month on arrival include Eritrea, Hong Kong, Macao, New Zealand and South Africa.
 Question: can i travel to new zealand without a passport Context: The groundhog (Marmota monax), also known as a woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. It was first scientifically described by Carl Linnaeus in 1758. The groundhog is also referred to as a chuck, wood-shock, groundpig, whistlepig, whistler, thickwood badger, Canada marmot, monax, moonack, weenusk, red monk and, among French Canadians in eastern Canada, siffleux. The name ``thickwood badger'' was given in the Northwest to distinguish the animal from the prairie badger. Monax was a Native American name of the woodchuck, which meant ``the digger''. Young groundhogs may be called chucklings. Other marmots, such as the yellow-bellied and hoary marmots, live in rocky and mountainous areas, but the groundhog is a lowland creature. It is found through much of the eastern United States across Canada and into Alaska
 Question: are ground hogs and woodchucks the same animal Context: For the scenes which involved filming with a bat, the production team used an actual bat, an animated bat, and a mechanical bat. When around the actual bat, Kate Flannery, who portrays Meredith Palmer, stated that ``we had to be extremely quiet around (it), basically pretending to scream.'' California State University, Northridge served as the backdrop for Ryan's business school and the art show; the scenes at the institution were shot in January of 2007.
 Question: was there a real bat in the office Context: Restriction enzymes are endonucleases from eubacteria and archaea that recognize a specific DNA sequence. The nucleotide sequence recognized for cleavage by a restriction enzyme is called the restriction site. Typically, a restriction site will be a palindromic sequence about four to six nucleotides long. Most restriction endonucleases cleave the DNA strand unevenly, leaving complementary single-stranded ends. These ends can reconnect through hybridization and are termed ``sticky ends''. Once paired, the phosphodiester bonds of the fragments can be joined by DNA ligase. There are hundreds of restriction endonucleases known, each attacking a different restriction site. The DNA fragments cleaved by the same endonuclease can be joined together regardless of the origin of the DNA. Such DNA is called recombinant DNA; DNA formed by the joining of genes into new combinations. Restriction endonucleases (restriction enzymes) are divided into three categories, Type I, Type II, and Type III, according to their mechanism of action. These enzymes are often used in genetic engineering to make recombinant DNA for introduction into bacterial, plant, or animal cells, as well as in synthetic biology.
 Question: is a section of dna recognized by a restriction endonuclease
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