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 United States is similar to many countries which permit the spreading of cremation ashes within their Exclusive Economic zone: when spreading ashes from a ship which is registered in a different country, the regulations and reporting procedures for the ship's flag state need to be complied with once the vessel is in international waters, that is, outside 12 nautical miles. Ships follow the London convention principles, as opposed to MARPOL regulations, as the ash is intentionally taken on board for discharge at sea, as opposed to ash generated on passage from the ship's incinerators. It should be further considered that on 1 January 2013, MARPOL Annex V came into force, which prevents discharge of a ship's incinerator ash.
 Question: is it against the law to throw ashes in the ocean Context: Roddick became a Grand Slam singles champion and world No. 1 shortly after he won the title at the 2003 US Open, defeating French Open champion Juan Carlos Ferrero in the final and overtaking him as the top-ranked player in the process. Despite several more years as one of the world's best players, the 2003 US Open title would remain his only Grand Slam triumph. He is the most recent North American male player to win a Grand Slam singles event, reach the top ranking, and claim the year-end world No. 1 ranking (2003). Roddick reached four other Grand Slam finals (Wimbledon in 2004, 2005 and 2009, and the US Open in 2006), losing to nemesis Roger Federer every time. Roddick was ranked in the top 10 for nine consecutive years between 2002 and 2010 at year's end and won five Masters Series titles in that period. He is married to Brooklyn Decker, a Sports Illustrated swimwear model and actress.
 Question: did andy roddick ever win a grand slam Context: Mercury was a common, long-standing treatment for syphilis, and its use as such has been suggested to date back to The Canon of Medicine (1025) by the Persian physician Ibn Sina (Avicenna); although this is only possible if syphilis existed in the Old World prior to Columbus (see § Origin). One of the first supporters of mercury treatment was Paracelsus because it had positive effects on the Arabic treatment of leprosy, which was thought to be a disease related to syphilis. Giorgio Sommariva of Verona is recorded to have used mercury to treat syphilis in 1496, and is often recognized as the first physician to have done so, although he may not have been a physician. During the sixteenth century, mercury was administered to syphilitic patients in various ways, including by rubbing it on the skin, by applying a plaster, and by mouth. A ``Fumigation'' method of administering mercury was also used, in which mercury was vaporized over a fire and the patients were exposed to the resulting steam, either by being placed in a bottomless seat over the hot coals, or by having their entire bodies except for the head enclosed in a box (called a ``tabernacle'') that received the steam. The goal of mercury treatment was to cause the patient to salivate, which was thought to expel the disease. Unpleasant side effects of mercury treatment included gum ulcers and loose teeth. Mercury continued to be used in syphilis treatment for centuries; an 1869 article by TJ Walker discussed administering mercury by injection for this purpose.
 Question: was mercury used as a cure for syphilis
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Yes