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: When Calls the Heart is a Canadian-American television drama series, inspired by Janette Oke's book of the same name from her Canadian West series, and developed by Michael Landon Jr. The series began airing on the Hallmark Channel in the United States on January 11, 2014, and on April 16, 2014 on Super Channel in Canada.
 Question: is there a sequel to when calls the heart Context: Although LEOSA preempts state and local laws, there are two notable exceptions: ``the laws of any State that (1) permit private persons or entities to prohibit or restrict the possession of concealed firearms on their property'' (such as a bars, private clubs, amusement parks, etc.), or ``(2) prohibit or restrict the possession of firearms on any State or local government property, installation, building, base, or park'' Additionally, LEOSA does not override the federal Gun-Free School Zone Act (GFSZA) which prohibits carrying a firearm within 1,000 feet of elementary or secondary schools. Although the GFSZA authorizes on-duty law enforcement officers to carry firearms in such circumstances, off-duty and retired law enforcement officers are still restricted from doing so unless they have a firearms license issued from the state in which they reside and then it is only good for the state in which they reside. Individuals must also obey any federal laws and federal agency policies that restrict the carrying of concealed firearms in certain federal buildings and lands, as well as federal regulations prohibiting the carriage of firearms on airplanes.
 Question: can off duty police carry guns in schools in california Context: Black Swan is a 2010 American psychological horror film directed by Darren Aronofsky. The screenplay was written by Mark Heyman, John McLaughlin, and Andres Heinz, based on an original story by Heinz. The film stars Natalie Portman, Vincent Cassel, Mila Kunis, Barbara Hershey and Winona Ryder. The plot revolves around a production of Tchaikovsky's Swan Lake ballet by a prestigious New York City ballet company. The production requires a ballerina to play the innocent and fragile White Swan, for which the committed dancer Nina (Portman) is a perfect fit, as well as the dark and sensual Black Swan, which are qualities better embodied by the new arrival Lily (Kunis). Nina is overwhelmed by a feeling of immense pressure when she finds herself competing for the part, causing her to lose her tenuous grip on reality and descend into a living nightmare.
 Question: is black swan movie based on a book Context: Genetic variation is brought about, fundamentally, by mutation, which is a permanent change in the chemical structure of chromosomes. Genetic recombination also produces changes within alleles.
 Question: changes in the gene pool can occur due to various mechanisms Context: The story begins as a girl named Sally and her brother, who serves as the narrator of the book, sit alone in their house on a cold, rainy day, staring wistfully out the window. Then they hear a loud bump which is quickly followed by the arrival of the Cat in the Hat, a tall anthropomorphic cat in a red and white striped hat and a red bow tie. The Cat proposes to entertain the children with some tricks that he knows. The children's pet fish refuses, insisting that the Cat should leave. The Cat responds by balancing the fish on the tip of his umbrella. The game quickly becomes increasingly trickier, as the Cat balances himself on a ball and tries to balance lots of household items on his limbs until he falls on his head, dropping everything he was holding. The fish admonishes him again, but the Cat in the Hat just proposes another game.
 Question: does the cat in the hat have a name
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