Assertion: extinction | /r/HasSubevent | long-term global warming
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Source sentences:
text: It is believed that the extinction was triggered by one or more eruptions of the Emeishan Traps, which released a large amount of carbon dioxide and sulfur dioxide into the stratosphere of the Northern and Southern Hemispheres due to the equatorial location of the Emeishan Traps, leading to sudden global cooling and long-term global warming; the eruptions also triggered ocean acidification, a depletion of seafloor oxygen and a severe disturbance of the carbon cycle.