A problem can be with a person.Logical formLearned from1 110 sentences. Persons may have problems.Logical formLearned from1 109 sentences. A problem can be hard.Logical formLearned from1 108 sentences. Problems can be complicated.Logical formLearned from1 098 sentences. A problem can be for a country.Logical formLearned from1 088 sentences. Someone may have a problem.Logical formLearned from1 086 sentences. Problems can be ecological.Logical formLearned from1 078 sentences. A problem can be with a male.Logical formLearned from1 065 sentences. A problem can be with an approach.Logical formLearned from1 057 sentences. A person may have problems.Logical formLearned from1 052 sentences. Problems may pertain-to a company.Logical formLearned from1 044 sentences. A problem may lie.Logical formLearned from1 033 sentences. A problem may pertain-to a US-president.Logical formLearned from1 032 sentences. A solution can be to a problem.Logical formLearned from1 027 sentences. Problems can be inherent.Logical formLearned from1 021 sentences.