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 liver and liver products (such as cod liver oil) of fish and many animals (such as seals and whales) contain omega-3, but also the active form of vitamin A. At high levels, this form of the vitamin can be dangerous (Hypervitaminosis A).
 Question: does fish oil have vitamin a in it 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: In British English, a ``bramble'' is any rough (usually wild) tangled prickly shrub--specifically the blackberry bush (Rubus fruticosus)--or any hybrid of similar appearance, with thorny stems. Bramble or brambleberry may also refer to the blackberry fruit or products of its fruit (e.g., bramble jelly). The shrub grows abundantly in all parts of the British Isles and harvesting the fruits in late summer and autumn is often considered a favourite pastime. It can also become a nuisance in gardens, sending down its strong suckering roots amongst hedges and shrubs. Many consider it a weed due its tendency to grow in neglected areas and its sharp, tough thorns which can be hazardous to children and pets.
 Question: is a bramble the same as a blackberry Context: Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means ``change in form''. The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure (100 megapascals (1,000 bar) or more), causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock.
 Question: can a metamorphic rock become another metamorphic rock Context: In the Standard Model of modern physics, the four fundamental forces of nature are known to be non-contact forces. The strong and weak interaction primarily deal with forces within atoms, while gravitational effects are only obvious on an ultra-macroscopic scale. Molecular and quantum physics show that the electromagnetic force is the fundamental interaction responsible for contact forces. The interaction between macroscopic objects can be roughly described as resulting from the electromagnetic interactions between protons and electrons of the atomic constituents of these objects. Everyday objects do not actually touch; rather, contact forces are the result of the interactions of the electrons at or near the surfaces of the objects.
 Question: does the concept of a contact force apply to both a macroscopic scale and an atomic scale
Yes
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No