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: In some legal jurisdictions, domestic partners who live together for an extended period of time but are not legally entitled to common-law marriage may be entitled to legal protection in the form of a domestic partnership. Some domestic partners may enter into nonmarital relationship contracts in order to agree, either verbally or in writing, to issues involving property ownership, support obligations, and similar issues common to marriage. (See effects of marriage and palimony.) Beyond agreements, registration of relationships in domestic partnership registries allow for the jurisdiction to formally acknowledge domestic partnerships as valid relationships with limited rights.
 Question: is common law marriage the same as domestic partnership Context: Despite the fact that Brenda never appeared on the screen, she was nonetheless present during occasional discussions during the following six seasons of the series. The most significant among them is her reconciliation with Dylan, who was going to move in with her. It is assumed that they were together for most episodes of the seventh and eighth seasons of the series, as during an episode of season 8 where it is learned that Dylan's half-sister was saved from a life of prostitution and then left to live with Dylan and Brenda in London and Kelly and Brandon mentioned going to visit them for part of their honeymoon. Later, when Dylan returned in season 9, he told his friends that he and Brenda had separated two years earlier. However, it frees Dylan to resume his relationship with Kelly.
 Question: does brenda come back to beverly hills 90210 Context: Tahrs are three species of large Asian artiodactyl ungulates related to the wild goat. Until recently the three species were believed to be closely related and were placed in a single genus, Hemitragus. Genetic studies have proven that the three tahrs are not as closely related as previously thought. Now they are considered as members of three separate monotypic genera; Hemitragus is now reserved for the Himalayan Tahr; Nilgiritragus for the Nilgiri Tahr; and Arabitragus for the Arabian Tahr.
 Question: nilgiri himalyan and arabian are types of tahr Context: The Ivy League is a collegiate athletic conference comprising sports teams from eight private universities in the Northeastern United States. The conference name is also commonly used to refer to those eight schools as a group beyond the sports context. The eight members are Brown University, Columbia University, Cornell University, Dartmouth College, Harvard University, the University of Pennsylvania, Princeton University, and Yale University. The term Ivy League has connotations of academic excellence, selectivity in admissions, and social elitism.
 Question: is university of pennsylvania an ivy league school Context: One often writes G = ( U , V , E ) (\displaystyle G=(U,V,E)) to denote a bipartite graph whose partition has the parts U (\displaystyle U) and V (\displaystyle V) , with E (\displaystyle E) denoting the edges of the graph. If a bipartite graph is not connected, it may have more than one bipartition; in this case, the ( U , V , E ) (\displaystyle (U,V,E)) notation is helpful in specifying one particular bipartition that may be of importance in an application. If U = V (\displaystyle U = V ) , that is, if the two subsets have equal cardinality, then G (\displaystyle G) is called a balanced bipartite graph. If all vertices on the same side of the bipartition have the same degree, then G (\displaystyle G) is called biregular.
 Question: does a bipartite graph have to be connected
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