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: On 3 March 2015 Jarryd Hayne became the first rugby league player (that hadn't already played in the NFL) to sign a contract with a National Football League team.
 Question: have any rugby players played in the nfl Context: A travel document is an identity document issued by a government or international treaty organization to facilitate the movement of individuals or small groups of persons across international boundaries, following international agreements. Travel documents usually assure other governments that the bearer may return to the issuing country, and are often issued in booklet form to allow other governments to place visas as well as entry and exit stamps into them. The most common travel document is a passport, which usually gives the bearer more privileges like visa-free access to certain countries. However, the term is sometimes used only for those documents which do not bear proof of nationality, such as a refugee travel document.
 Question: is a travel document the same as a passport Context: An especially unusual version of the observer effect occurs in quantum mechanics, as best demonstrated by the double-slit experiment. Physicists have found that even passive observation of quantum phenomena (by changing the test apparatus and passively 'ruling out' all but one possibility), can actually change the measured result. A particularly famous example is the 1998 Weizmann experiment. The ``observer'' in this experiment -- a sophisticated electronic detector -- wasn't human. And yet, possibly because the word ``observer'' implies a person, such findings have led to a popular belief that a conscious mind can directly affect reality. The need for the ``observer'' to be conscious has been rejected by mainstream science as a misconception rooted in a poor understanding of the quantum wave function ψ and the quantum measurement process.
 Question: quantum physics tells us that nothing that is observed is unaffected by the observer Context: The square cuboid, square box, or right square prism (also ambiguously called square prism) is a special case of the cuboid in which at least two faces are squares. It has Schläfli symbol (4) × ( ), and its symmetry is doubled from (2,2) to (4,2), order 16.
 Question: is a square prism the same as a cuboid Context: The Rolling Stones are an English rock band formed in London, England, in 1962. The first stable line-up consisted of Brian Jones (guitar, harmonica), Mick Jagger (lead vocals), Keith Richards (guitar, backing vocals), Bill Wyman (bass), Charlie Watts (drums), and Ian Stewart (piano). Stewart was removed from the official line-up in 1963 but continued as a touring member until his death in 1985. Brian Jones was the original leader of the group. The band's primary songwriters, Jagger and Richards, assumed leadership after Andrew Loog Oldham became the group's manager. Their musical focus shifted from covering blues songs to writing original material, a decision with which Jones did not agree. Jones left the band less than a month before his death in 1969, having already been replaced by Mick Taylor, who remained until 1974. After Taylor left the band, Ronnie Wood took his place in 1975 and continues on guitar in tandem with Richards. Following Wyman's departure in 1993, Darryl Jones joined as their touring bassist. The Stones' touring keyboardists have included Nicky Hopkins (1967--1982), Ian McLagan (1978--1981), Billy Preston (through the mid-1970s) and Chuck Leavell (1982--present).
 Question: are all the original rolling stones still alive
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