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 Rocky Mountains, also known as the Rockies, are a major mountain range in western North America. The Rocky Mountains stretch more than 3,000 miles (4,800 km) from the northernmost part of British Columbia, in western Canada, to New Mexico, in the Southwestern United States. Within the North American Cordillera, the Rockies are somewhat distinct from the Pacific Coast Ranges, Cascade Range, and the Sierra Nevada, which all lie further to the west.
 Question: is the sierra nevada part of the rocky mountains Context: Lomi salmon (more commonly known as lomi-lomi salmon) is a side dish in Hawaiian cuisine. It is a fresh tomato and salmon salad, and was introduced to Hawaiians by early Western sailors. It is typically prepared by mixing raw salted, diced salmon with tomatoes, sweet gentle Maui onions (or sometimes green onion), and occasionally flakes of hot red chili pepper, or crushed ice. It is always served cold. Other variations include salmon, diced tomato, diced cucumber, and chopped sweet onion.
 Question: is the salmon cooked in lomi lomi salmon Context: A dingo--dog hybrid is a cross between a dingo and a domestic dog. The current population of free ranging domestic dogs in Australia is now probably higher than in the past. However, the proportion of the so-called ``pure'' dingoes (dogs with exclusively dingo-ancestry) has been on the decrease over the last few decades due to hybridisation and is regarded as further decreasing.
 Question: can you breed a dog with a dingo Context: Cheetahs breed throughout the year; they are induced ovulators. Females become sexually mature at 21 to 22 months of age. Females are polyoestrus -- they have an oestrus (``heat'') cycle every 12 days (this can vary from 10 to 20 days), each oestrus lasting one to three days. A female can give birth again after 17 to 20 months; however, on the loss of a whole litter mothers can mate again. Urine-marking in males becomes more pronounced when a female in their vicinity comes into oestrus. Males fight among one another to secure access to the female; even males in a coalition may show some aggression toward one another on approaching a female. One male eventually wins dominance over the others. Mating, observed mainly at night, begins with the male approaching the female, who lies down on the ground. No courtship behaviour is observed; the male immediately secures hold of the female's nape and copulation takes place. The pair then ignore each other and part ways. However, they meet and copulate a few more times within the next few days. Polyandrous, females can mate with several males. The mean number of motile sperm in a single ejaculation is nearly 25.3 million.
 Question: does a cheetah keep its mate for life
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