Assertion: calamity | /r/HasProperty | serious railroad accident
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text: A disaster is an unforeseen mischance or misadventure (as a shipwreck, a serious railroad accident, or the failure of a great enterprise) which happens either through culpable lack of foresight or through adverse external agency and brings with it destruction (as of life and property) or ruin (as of projects, careers, or great hopes).