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: A check valve, clack valve, non-return valve, reflux valve, retention valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.
 Question: is check valve and non return valve same Context: The Marine Corps has been a component of the U.S. Department of the Navy since 30 June 1834, working closely with naval forces. The USMC operates installations on land and aboard sea-going amphibious warfare ships around the world. Additionally, several of the Marines' tactical aviation squadrons, primarily Marine Fighter Attack squadrons, are also embedded in Navy carrier air wings and operate from the aircraft carriers.
 Question: are the marines a branch of the army Context: The Aero bar was made available for a short time in the United States by Nestlé during the 1980s, though it seems not to have been a commercial success. However, they are still available at certain speciality vendors or supermarkets such as Big Y, Wegmans and Publix that import the bars. Previously The Hershey Company sold Aero bars in the United States under licence from Rowntree Chocolate Company from 1937 until 1939. Hershey currently markets a similar bar called Hershey's Air Delight.
 Question: can you get aero bars in the us
Yes
Yes
No
Yes