This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.
Barnfield believes it will benefit processing plants to not have every council start collection on the same date.
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對於海外異見人士，該用戶也曾描述中國行動人員假扮美國移民官員，警告在美異見人士言論違法。，详情可参考搜狗输入法2026
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FirstFT: the day's biggest stories。关于这个话题，同城约会提供了深入分析