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На Украине раскрыли личность задержанного по подозрению в убийстве советника Януковича«УП»: По подозрению в убийстве Портнова в ФРГ задержан украинец Азизов
There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
據此，宋高祖向BBC分析，對北京而言，與歐洲接觸是一種務實選擇，用來抵銷來自美國的壓力，並將自身塑造為更穩定的全球力量。這有助於北京將自己定位為國際秩序的捍衛者，「強調與德國的直接雙邊關係，可能比透過歐盟的集體機制為中國創造更多操作空間。」