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: Man on Fire is a 2004 British-American crime thriller film directed by Tony Scott from a screenplay by Brian Helgeland, and based on the 1980 novel of the same name by A.J. Quinnell. The novel had previously been adapted into a feature film in 1987. In this film, Denzel Washington portrays John Creasy, a despondent, alcoholic former Special Activities Division operative/U.S. Marine Corps Force Reconnaissance officer-turned bodyguard, who goes on a revenge rampage after his charge, nine-year-old Lupita ``Pita'' Ramos (Dakota Fanning), is abducted in Mexico City. The supporting cast includes Christopher Walken, Radha Mitchell, Giancarlo Giannini, Marc Anthony, Rachel Ticotin and Mickey Rourke.
 Question: was the movie man on fire a true story Context: The bridge is one of four toll-free crossings between Manhattan and Long Island. The others are the Queensboro, Manhattan, and Brooklyn Bridges.
 Question: is the williamsburg bridge the same as the brooklyn bridge Context: Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two seperate biological fathers. The term superfecundation is derived from fecund, meaning the ability to produce offspring. Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers. Homopaternal superfecundation refers to the fertilization of two separate ova from the same father, leading to fraternal twins. While heteropaternal superfecundation is referred to as a form of atypical twinning, genetically, the twins are half siblings. Superfecundation, while rare, can occur through either separate occurrences of sexual intercourse or through artificial insemination.
 Question: is possible for twins to have different dads Context: Renal function, in nephrology, is an indication of the kidney's condition and its role in renal physiology. Glomerular filtration rate (GFR) describes the flow rate of filtered fluid through the kidney. Creatinine clearance rate (C or CrCl) is the volume of blood plasma that is cleared of creatinine per unit time and is a useful measure for approximating the GFR. Creatinine clearance exceeds GFR due to creatinine secretion, which can be blocked by cimetidine. In alternative fashion, overestimation by older serum creatinine methods resulted in an underestimation of creatinine clearance, which provided a less biased estimate of GFR. Both GFR and C may be accurately calculated by comparative measurements of substances in the blood and urine, or estimated by formulas using just a blood test result (eGFR and eC).
 Question: is creatinine clearance and gfr the same thing Context: The return address is not required on postal mail. However, lack of a return address prevents the postal service from being able to return the item if it proves undeliverable; such as from damage, postage due, or invalid destination. Such mail may otherwise become dead letter mail.
 Question: do you have to put a return adress on a letter
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No