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: During oxidative phosphorylation, electrons are transferred from electron donors to electron acceptors such as oxygen, in redox reactions. These redox reactions release energy, which is used to form ATP. In eukaryotes, these redox reactions are carried out by a series of protein complexes within the inner membrane of the cell's mitochondria, whereas, in prokaryotes, these proteins are located in the cells' intermembrane space. These linked sets of proteins are called electron transport chains. In eukaryotes, five main protein complexes are involved, whereas in prokaryotes many different enzymes are present, using a variety of electron donors and acceptors.
 Question: is the electron transport chain part of oxidative phosphorylation Context: If there is more than one light source, there will be several shadows, with the overlapping parts darker, and various combinations of brightnesses or even colors. The more diffuse the lighting is, the softer and more indistinct the shadow outlines become, until they disappear. The lighting of an overcast sky produces few visible shadows.
 Question: can an object have more than one shadow Context: In music, a double stop refers to the technique of playing two notes simultaneously on a bowed stringed instrument such as a violin, a viola, a cello, or a double bass. In performing a double stop, two separate strings are bowed or plucked simultaneously. Although the term itself suggests these strings are to be fingered (stopped), in practice one or both strings may be open.
 Question: can a violin play two notes at once Context: In baseball, a grand slam is a home run that is hit when all three bases are occupied by baserunners (``bases loaded''), thereby scoring four runs--the most possible in one play. Thirteen players have hit two grand slams in a single Major League Baseball (MLB) game to date, the most recent being Josh Willingham of the Washington Nationals on July 27, 2009. No player has accomplished the feat more than once in his career and no player has ever hit more than two in a game. Tony Lazzeri was the first player to hit two grand slams in a single game, doing so for the New York Yankees against the Philadelphia Athletics on May 24, 1936.
 Question: has anyone ever hit 2 grand slams in one game Context: The U.S. Constitution uses but does not define the phrase ``natural born Citizen'', and various opinions have been offered over time regarding its precise meaning. The consensus of early 21st-century constitutional scholars, together with relevant case law, is that natural-born citizens include, subject to exceptions, those born in the United States. Many scholars have also concluded that those who meet the legal requirements for U.S. citizenship ``at the moment of birth'', regardless of place of birth, are also natural-born citizens. Every president to date was either a citizen at the adoption of the Constitution in 1789 or was born in the United States; of these there have been seven that had at least one parent who was not born on U.S. soil.
 Question: can a president be born outside the us
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