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: Under federal law, airsoft guns are not classified as firearms and are legal for all ages. People under the age of 18 are not permitted to buy airsoft guns over the counter in stores. However, a person of any age may use one (with the permission of their parents, of course, for anyone under 18). This is also the case for the laws in each state. However, in some major cities, the definition of a firearm within their respected ordinances includes propulsion by spring or compressed air, thus making airsoft subject to applicable laws. For example, airsoft guns within the state of California can only be bought by a person above the age of 18. However, no laws indicate an age requirement to sell airsoft guns. Generally speaking, toy, look-alike, and imitation firearms must have an orange tip during shipping and transportation.
 Question: is there an age limit for bb guns Context: Drinking in public in Denmark is legal in general. The law forbids ``disturbing of the public law and order''. Thus general consumption is accepted. Several cafes have outdoor serving in the same zones.
 Question: can you drink alcohol in public in denmark Context: The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1 e, a spin of 1/2 (same as electron), and has the same mass as an electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more gamma ray photons (see electron--positron annihilation).
 Question: a positron is the antiparticle of the electron Context: Bahrain (/bɑːˈreɪn/ ( listen); Arabic: البحرين‎‎ al-Baḥrayn), officially the Kingdom of Bahrain (Arabic: مملكة البحرين‎‎ Mamlakat al-Baḥrayn), is a small Arab constitutional monarchy in the Persian Gulf. It is an island country consisting of a small archipelago centered around Bahrain Island, situated between the Qatar peninsula and the north eastern coast of Saudi Arabia, to which it is connected by the 25 km (16 mi) King Fahd Causeway. Bahrain's population is 1,234,571 (c. 2010), including 666,172 non-nationals. It is 780 km in size, making it the third smallest nation in Asia after the Maldives and Singapore.
 Question: is bahrain the smallest country in the world
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