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 real estate in the United States, a deed of trust or trust deed is a deed wherein legal title in real property is transferred to a trustee, which holds it as security for a loan (debt) between a borrower and lender. The equitable title remains with the borrower. The borrower is referred to as the trustor, while the lender is referred to as the beneficiary.
 Question: is a deed of trust a security instrument Context: Mammoth Cave National Park is a U.S. national park in central Kentucky, encompassing portions of Mammoth Cave, the longest cave system known in the world. Since the 1972 unification of Mammoth Cave with the even-longer system under Flint Ridge to the north, the official name of the system has been the Mammoth--Flint Ridge Cave System. The park was established as a national park on July 1, 1941. It became a World Heritage Site on October 27, 1981, and an international Biosphere Reserve on September 26, 1990.
 Question: is mammoth cave the longest cave in the world
Yes
Yes
Yes