SAT (short for "satisfiability") is a logic problem that given a boolean formula, it asks whether the boolean formula has an assignment that makes the problem true. An example boolean formula is:
Wave of strikes comes after Taliban forces attack Pakistani border troops following earlier action from Islamabad
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communications were widely used in the military during the second World War and
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为促进韩国房地产市场健康发展，韩国政府计划今年5月开始对多套住宅持有者售房时征收高额税金。不久前，李在明曾敦促这类业主尽快出售房产。他还表示，政府将减少鼓励投资性购房的优惠政策。（新华社）