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: Puerto Rico (Spanish for ``Rich Port''), officially the Commonwealth of Puerto Rico (Spanish: Estado Libre Asociado de Puerto Rico, lit. ``Free Associated State of Puerto Rico'') and briefly called Porto Rico, is an unincorporated territory of the United States located in the northeast Caribbean Sea.
 Question: is porto rico a part of the united states Context: Several animal species are able to hear frequencies well beyond the human hearing range. Some dolphins and bats, for example, can hear frequencies up to 100,000 Hz. Elephants can hear sounds at 14--16 Hz, while some whales can hear infrasonic sounds as low as 7 Hz (in water).
 Question: do all animals hear the same frequencies of sound as humans do Context: Mary Ellen (Judy Norton Taylor) is the oldest of Liv and John's daughters, born in April 1920, aged 13 in season one. Throughout the first few seasons, she is a typically whiny, sometimes rebellious teenager, somewhat of a tomboy who enjoys playing baseball, but could also be vain, engaging in a rivalry with rich-girl Martha-Rose Coverdale for the affections of the awkward G.W. Haines (David Doremus). Mary Ellen matures into a wiser young woman and her childish fantasy of becoming a movie star gives way for a more reasonable and realistic ambition to go into medicine after reading up on it and developing an interest. She then works to gain an education as a medical worker, and becomes a nurse. However, when she ends up taking care of the people out in the country by herself, she concludes they need more medical expertise than she can offer them and continues studying medicine until she succeeds in becoming a fully-fledged doctor. Even though some people frown upon female doctors and she receives mixed support from her family, she refuses to let this stop her. Mary Ellen has a special relationship with each of her six siblings, but she is especially close to her younger sister Erin. Mary Ellen and Erin fought a lot when they were younger girls, particularly in seasons 1 and 2. But in the middle seasons, Mary Ellen and Erin matured and became friends. In season 5 after Mary Ellen married Curt, her relationship with her sister deepened even further and by the end of the show, they truly did become each other's best friend.
 Question: does mary ellen become a doctor on the waltons Context: Within the United Kingdom, a unitary sovereign state, Northern Ireland, Scotland and Wales have gained a degree of autonomy through the process of devolution. The UK Parliament and British Government deal with all reserved matters for Northern Ireland and Scotland and all non-transferred matters for Wales, but not in general matters that have been devolved to the Northern Ireland Assembly, Scottish Parliament and National Assembly for Wales. Additionally, devolution in Northern Ireland is conditional on co-operation between the Northern Ireland Executive and the Government of Ireland (see North/South Ministerial Council) and the British Government consults with the Government of Ireland to reach agreement on some non-devolved matters for Northern Ireland (see British--Irish Intergovernmental Conference). England, comprising the majority of the population and area of the United Kingdom, remains fully the responsibility of the UK Parliament centralised in London.
 Question: is wales a part of the united kingdom
Yes
Yes
No
Yes
Yes