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: Today, governed by a semi-autonomous Board of Regents, the University of California has 10 campuses, a combined student body of 251,700 students, 21,200 faculty members, 144,000 staff members and over 1.86 million living alumni as of October 2016. Its tenth and newest campus in Merced opened in fall 2005. Nine campuses enroll both undergraduate and graduate students; one campus, UC San Francisco, enrolls only graduate and professional students in the medical and health sciences. In addition, the UC Hastings College of Law, located in San Francisco, is legally affiliated with UC, but other than sharing its name is entirely autonomous from the rest of the system.
 Question: is uc san francisco part of the uc system Context: Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 599 mM). This means that every kilogram (roughly one litre by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na ) and chloride (Cl ) ions). Average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water (density 1.0 kg/L at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about −2 °C (28 °F). The coldest seawater ever recorded (in a liquid state) was in 2010, in a stream under an Antarctic glacier, and measured −2.6 °C (27.3 °F). Seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater and the difference between measurements based on different reference scales may be up to 0.14 units.
 Question: is salt water the same as sea water Context: The Toads usually play assisting roles in the Mario franchise and its action games, such as Toadsworth introduced in Super Mario Sunshine and the Toad Brigade association in Super Mario Galaxy. Despite this, Toads also play the role as heroes in some games. Such a case included the 2 Toads (yellow and blue) who were featured as playable characters along with Mario and Luigi in New Super Mario Bros. Wii. The 2 Toads (yellow and blue) return as playable characters later on in New Super Mario Bros. U as well as New Super Luigi U. Toad himself (in a blue palette in reference to his original sprite from Super Mario Bros. 2) returns as one of the playable characters in Super Mario 3D World. The Wii U title Captain Toad: Treasure Tracker cast Captain Toad into the spotlight; thus, marking it as the first game in 20 years since Wario's Woods to have a Toad as the main star as well as the first title to have Toad as the titular character.
 Question: are toad and captain toad the same person
Yes
Yes
Yes
Yes