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 chemistry, pH (/piːˈeɪtʃ/) is a logarithmic scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the base 10 logarithm of the molar concentration, measured in units of moles per liter, of hydrogen ions. More precisely it is the negative of the base 10 logarithm of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, at pH 7 (25 °C), being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.
 Question: is it possible for ph to be negative Context: Fear the Walking Dead is an American post-apocalyptic horror drama television series created by Robert Kirkman and Dave Erickson, that premiered on AMC on August 23, 2015. It is a companion series and prequel to The Walking Dead, which is based on the comic book series of the same name by Robert Kirkman, Tony Moore, and Charlie Adlard. The first season consists of six episodes. The second season, comprising 15 episodes, premiered on April 10, 2016. On April 15, 2016, AMC announced the series had been renewed for a 16-episode third season, which premiered on June 4, 2017. In April 2017, AMC renewed the series for a fourth season and announced that Andrew Chambliss and Ian Goldberg would replace the departing Dave Erickson as showrunners.
 Question: are fear the walking dead and the walking dead the same Context: Star-Crossed is an American science fiction romantic teen drama television series created by Meredith Averill. Star-Crossed premiered on The CW on February 17, 2014. On May 8, 2014, The CW cancelled Star-Crossed after one season.
 Question: are they making season 2 of star crossed Context: Cradle cap is seborrheic dermatitis that affects infants. It presents on the scalp as greasy patches of scaling, which appear thick, crusty, yellow, white or brown. The affected regions are not usually itchy and do not bother the child. Other affected areas can include the eyelids, ear, around the nose, and in the groin. Hair loss can also occur.
 Question: can cradle cap make baby hair fall out Context: Alternative periodic tables are tabulations of chemical elements differing significantly in their organization from the traditional depiction of the periodic system. Several have been devised, often purely for didactic reasons, as not all correlations between the chemical elements are effectively captured by the standard periodic table.
 Question: are there other representations of the periodic table Context: Currently, federal law requires background checks (through the National Instant Criminal Background Check System) only for guns sold through licensed firearm dealers, which account for 78% of all gun sales in the United States. This figure was published in a 2017 study by the Annals of Internal Medicine which compared data from 1994, indicating 40% of recent gun acquisitions were completed without a background check, to a 2015 survey which found that 22% of recent gun transfers (purchased and nonpurchased) were completed without a background check. The current federal law allows people not ``engaged in the business'' of selling firearms to sell firearms without a license or records. The Coalition to Stop Gun Violence (CSGV) states that the National Instant Criminal Background Check System has prevented over two million felons and other prohibited persons from purchasing firearms. According to the CSGV, the law also has a prohibitive effect, that deters illegal purchases.
 Question: are there background checks for guns in america
Yes
Yes
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No
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Yes