A problem can be worse.Logical formLearned from2 938 sentences. A problem can be complex.Logical formLearned from2 882 sentences. A problem can be pervasive.Logical formLearned from2 803 sentences. An extent may pertain-to a problem.Logical formLearned from2 784 sentences. Problem can be that something-is-the-case.Logical formLearned from2 778 sentences. Problems can be long-term.Logical formLearned from2 653 sentences. A host can be constituted-of-or-filled-with problems.Logical formLearned from2 650 sentences. A source may pertain-to a problem.Logical formLearned from2 632 sentences. A problem can be for a person.Logical formLearned from2 616 sentences. Problems can be known.Logical formLearned from2 585 sentences. A series can be constituted-of-or-filled-with problems.Logical formLearned from2 544 sentences. A set can be constituted-of-or-filled-with problems.Logical formLearned from2 531 sentences. Persons may have problems.Logical formLearned from2 491 sentences. A problem may be resolved.Logical formLearned from2 473 sentences. (Engineering teams) may isolate a cause of a problem.Logical formLearned from2 365 sentences.