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: Brazil (Portuguese: Brasil (bɾaˈziw)), officially the Federative Republic of Brazil (Portuguese: República Federativa do Brasil, listen (help info)), is the largest country in both South America and Latin America. At 8.5 million square kilometers (3.2 million square miles) and with over 208 million people, Brazil is the world's fifth-largest country by area and the sixth most populous. The capital is Brasília, and the most populated city is São Paulo. It is the largest country to have Portuguese as an official language and the only one in the Americas, besides being one of the most multicultural and ethnically diverse nations, due to the strong immigration from various places in the world. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of 7,491 kilometers (4,655 mi). It borders all other South American countries except Ecuador and Chile and covers 47.3% of the continent's land area. Its Amazon River basin includes a vast tropical forest, home to diverse wildlife, a variety of ecological systems, and extensive natural resources spanning numerous protected habitats. This unique environmental heritage makes Brazil one of 17 megadiverse countries, and is the subject of significant global interest and debate regarding deforestation and environmental protection.
 Question: is brazil the largest country in south america Context: The optic nerve is the second of twelve paired cranial nerves and is technically part of the central nervous system, rather than the peripheral nervous system because it is derived from an out-pouching of the diencephalon (optic stalks) during embryonic development. As a consequence, the fibers of the optic nerve are covered with myelin produced by oligodendrocytes, rather than Schwann cells of the peripheral nervous system, and are encased within the meninges. Peripheral neuropathies like Guillain--Barré syndrome do not affect the optic nerve. However, most typically the optic nerve is grouped with the other eleven cranial nerves and considered to be part of the peripheral nervous system.
 Question: is the optic nerve part of the central nervous system Context: The final will be played at the Wanda Metropolitano in Madrid, Spain. The winners of the 2018--19 UEFA Champions League will earn the right to play against the winners of the 2018--19 UEFA Europa League in the 2019 UEFA Super Cup. They will also automatically qualify for the 2019--20 UEFA Champions League group stage, and if they have already qualified through their league performance, the berth reserved will be given to the champions of the 2018--19 Austrian Bundesliga, the 11th-ranked association according to next season's access list.
 Question: do the winners of champions league automatically qualify Context: The episode is set four months after Dean goes to hell in No Rest for the Wicked at the end of season 3. The narrative follows the brothers Dean (Jensen Ackles) and Sam Winchester (Jared Padalecki) as Dean returns from hell and tries to discover how he came back to life. The episode is perhaps most significant for introducing the angel Castiel (Misha Collins), who would become the longest surviving regular character.
 Question: does dean come back to life in supernatural
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