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 perhaps three hundred sign languages in use around the world today. The number is not known with any confidence; new sign languages emerge frequently through creolization and de novo (and occasionally through language planning). In some countries, such as Sri Lanka and Tanzania, each school for the deaf may have a separate language, known only to its students and sometimes denied by the school; on the other hand, countries may share sign languages, though sometimes under different names (Croatian and Serbian, Indian and Pakistani). Deaf sign languages also arise outside educational institutions, especially in village communities with high levels of congenital deafness, but there are significant sign languages developed for the hearing as well, such as the speech-taboo languages used in aboriginal Australia. Scholars are doing field surveys to identify the world's sign languages.
 Question: does sign language vary from country to country Context: Presently, oceans are CO sinks, and represent the largest active carbon sink on Earth, absorbing more than a quarter of the carbon dioxide that humans put into the air. The solubility pump is the primary mechanism responsible for the CO2 absorption by the oceans.
 Question: oceans are a global sink for carbon dioxide Context: Jason David Frank and Amy Jo Johnson, two of the stars of the original TV series, make cameo appearances as Angel Grove citizens.
 Question: are any of the original power rangers in the new movie Context: The English Channel (French: la Manche, ``The Sleeve''; German: Ärmelkanal, ``Sleeve Channel''; Breton: Mor Breizh, ``Sea of Brittany''; Cornish: Mor Bretannek, ``British Sea''; Dutch: Het Kanaal, ``The Channel''), also called simply the Channel, is the body of water that separates southern England from northern France and links the southern part of the North Sea to the Atlantic Ocean. It is the busiest shipping area in the world.
 Question: is the english channel part of the north sea Context: Pen-type readers consist of a light source and photodiode that are placed next to each other in the tip of a pen or wand. To read a bar code, the person holding the pen must move the tip of it across the bars at a relatively uniform speed. The photodiode measures the intensity of the light reflected back from the light source as the tip crosses each bar and space in the printed code. The photodiode generates a waveform that is used to measure the widths of the bars and spaces in the bar code. Dark bars in the bar code absorb light and white spaces reflect light so that the voltage waveform generated by the photodiode is a representation of the bar and space pattern in the bar code. This waveform is decoded by the scanner in a manner similar to the way Morse code dots and dashes are decoded.
 Question: do they scan the white part of the barcode
Yes
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Yes