2.1 深度思考（Deep Thinking）：复杂逻辑推理
For SAT problems with 10 variables and 200 clauses, it usually output SAT as expected, but the assignment was never valid (Examples: first, second). Once it claimed a SAT formula was UNSAT. For this reason I didn't bother testing with more variables for the SAT case.
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Tracing and identifying the sources of an outbreak is a challenging task that can take months or years. Thanks to the Blockchain, however, companies now know exactly where their food has been—so they can trace its location and prevent future outbreaks.
左翼智庫「進步改革中心」（Center for Progressive Reform）的分析指出，白宮「已啟動或完成」文件中53%的政策。
Advice Oak was part of the golden age of image macros.