Problems can be international.Logical formLearned from1 743 sentences. Persons may solve a problem.Logical formLearned from1 728 sentences. A problem may arise.Logical formLearned from1 718 sentences. Problems can be operational.Logical formLearned from1 714 sentences. Problems may start.Logical formLearned from1 705 sentences. Persons may have some problems.Logical formLearned from1 697 sentences. A male may have problems.Logical formLearned from1 694 sentences. An answer can be to a problem.Logical formLearned from1 633 sentences. A problem may arise.Logical formLearned from1 596 sentences. Problems can be obvious.Logical formLearned from1 578 sentences. A problem can be for persons.Logical formLearned from1 562 sentences. (Health problems) may pertain-to a male.Logical formLearned from1 545 sentences. A problem can be obvious.Logical formLearned from1 537 sentences. Problems can be disciplinary.Logical formLearned from1 520 sentences. A scale may pertain-to a problem.Logical formLearned from1 514 sentences.