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: The following military bases in Pakistan have been accessible to the United States, mainly for logistics, relief efforts or as launching bases for drone operations. Pakistan comes under the United States Central Command (USCENTCOM) theatre of operations. The Afghanistan-Pakistan Center of Excellence is a division of USCENTCOM, focusing on analysis of operations in Pakistan and Afghanistan (formerly known as the AfPak theatre). Currently, there are no U.S. bases in Pakistan.
 Question: does the us have a military base in pakistan Context: Borderlands: The Pre-Sequel is an action role-playing first-person shooter video game developed by 2K Australia, with assistance from Gearbox Software and published by 2K Games. It is the third game in the Borderlands series, and is set between 2009's Borderlands and 2012's Borderlands 2. It was released for Microsoft Windows, OS X, Linux, PlayStation 3 and Xbox 360 on 14 October 2014. PlayStation 4 and Xbox One ports were released as part of Borderlands: The Handsome Collection on 24 March 2015.
 Question: did borderlands 2 come out before the pre sequel Context: If f is differentiable at a point x, then f must also be continuous at x. In particular, any differentiable function must be continuous at every point in its domain. The converse does not hold: a continuous function need not be differentiable. For example, a function with a bend, cusp, or vertical tangent may be continuous, but fails to be differentiable at the location of the anomaly.
 Question: if a function is continuous then it is differentiable at that point Context: Liquefied petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.
 Question: is propane gas the same as lpg gas 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 still a department of the navy
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