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 Channel Tunnel (French: Le tunnel sous la Manche; also nicknamed the Chunnel) is a 50.45-kilometre (31.35 mi) rail tunnel linking Folkestone, Kent, in the United Kingdom, with Coquelles, Pas-de-Calais, near Calais in northern France, beneath the English Channel at the Strait of Dover. At its lowest point, it is 75 m (250 ft) deep below the sea bed and 115 m (380 ft) below sea level. At 37.9 kilometres (23.5 mi), the tunnel has the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 kilometres (33.46 mi) and deeper at 240 metres (790 ft) below sea level. The speed limit for trains in the tunnel is 160 kilometres per hour (99 mph).
 Question: is there a train that connects england to europe Context: Sockeye salmon (Oncorhynchus nerka), also called red salmon, kokanee salmon, or blueback salmon, is an anadromous species of salmon found in the Northern Pacific Ocean and rivers discharging into it. This species is a Pacific salmon that is primarily red in hue during spawning. They can grow up to 84 cm (2 ft 9 in) in length and weigh 2.3 to 7 kg (5.1--15.4 lb). Juveniles remain in freshwater until they are ready to migrate to the ocean, over distances of up to 1,600 km (990 mi). Their diet consists primarily of zooplankton. Sockeye salmon are semelparous, dying after they spawn. Some populations, referred to as kokanee, do not migrate to the ocean and live their entire lives in freshwater.
 Question: is sockeye salmon the same as red salmon Context: The Treasurer of the United States is an official in the United States Department of the Treasury who was originally charged with the receipt and custody of government funds, though many of these functions have been taken over by different bureaus of the Department. Responsibility for oversight of the Bureau of Engraving and Printing, the United States Mint, and the United States Savings Bonds Division (now the Savings Bond Marketing Office within the Bureau of the Public Debt) was assigned to the Treasurer in 1981. As of 2002 the Office of the Treasurer underwent a major reorganization. The Treasurer now advises the Director of the Mint, the Director of the Bureau of Engraving and Printing, the Deputy Secretary and the Secretary of the Treasury on matters relating to coinage, currency and the production of other instruments by the United States.
 Question: are the secretary of the treasury and the us treasurer the same Context: In humans, cold shock response is perhaps the most common cause of death from immersion in very cold water, such as by falling through thin ice. The immediate shock of the cold causes involuntary inhalation, which if underwater can result in drowning. The cold water can also cause heart attack due to vasoconstriction; the heart has to work harder to pump the same volume of blood throughout the body. For people with heart disease, this additional workload can cause the heart to go into arrest. Inhalation of water (and thus drowning) may result from hyperventilation. Some people are much better able to survive swimming in very cold water due to body or mental conditioning.
 Question: can cold water make you go into shock
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