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: Greenland (Greenlandic: Kalaallit Nunaat, pronounced (kalaːɬit nunaːt); Danish: Grønland, pronounced (ˈɡʁɶnˌlanˀ)) is an autonomous constituent country within the Kingdom of Denmark between the Arctic and Atlantic Oceans, east of the Canadian Arctic Archipelago. Though physiographically a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers, as well as the nearby island of Iceland) for more than a millennium. The majority of its residents are Inuit, whose ancestors began migrating from the Canadian mainland in the 13th century, gradually settling across the island.
 Question: is greenland on the continent of north america Context: The Red Queen is a fictional character in Lewis Carroll's fantasy novel Through the Looking-Glass. She is often confused with the Queen of Hearts from the previous book Alice's Adventures in Wonderland, although the two are very different.
 Question: are the queen of hearts and the red queen the same person Context: Although people typically use the word ``antihistamine'' to describe drugs for treating allergies, doctors and scientists use the term to describe a class of drug that opposes the activity of histamine receptors in the body. In this sense of the word, antihistamines are subclassified according to the histamine receptor that they act upon. The two largest classes of antihistamines are H-antihistamines and H-antihistamines. Antihistamines that target the histamine H-receptor are used to treat allergic reactions in the nose (e.g., itching, runny nose, and sneezing) as well as for insomnia. They are sometimes also used to treat motion sickness or vertigo caused by problems with the inner ear. Antihistamines that target the histamine H-receptor are used to treat gastric acid conditions (e.g., peptic ulcers and acid reflux). H-antihistamines work by binding to histamine H receptors in mast cells, smooth muscle, and endothelium in the body as well as in the tuberomammillary nucleus in the brain; H-antihistamines bind to histamine H receptors in the upper gastrointestinal tract, primarily in the stomach.
 Question: is histamine an agonist for h1 and h2 receptors Context: Compared with zinc-carbon batteries of the Leclanché cell or zinc chloride types, alkaline batteries have a higher energy density and longer shelf-life, with the same voltage.
 Question: are carbon zinc batteries the same as alkaline Context: Magenta is Blue's best friend, who is identical to her with the exception of a magenta fur coat. She is first shown in the episode ``Blue's Story Time'' but is not properly introduced until ``Magenta Comes Over''. She is one of Blue's classmates at school and has visited the Blue's Clues house on special occasions. She gets a pair of purple eyeglasses in the fourth season and keeps them for her appearances later on in the series. Magenta is shyer than Blue but shares the same playful and energetic attitude. Steven Burns stated in an interview that both she and Blue are girls. She is voiced by Koyalee Chanda.
 Question: is magenta from blue's clues a boy
Yes
Yes
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No