A problem can be urgent.Logical formLearned from1 189 sentences. Problems can be interesting.Logical formLearned from1 181 sentences. Problems can be regional.Logical formLearned from1 176 sentences. A problem can be interesting.Logical formLearned from1 169 sentences. Problems may begin.Logical formLearned from1 168 sentences. A problem can be systemic.Logical formLearned from1 165 sentences. Problems can be unexpected.Logical formLearned from1 165 sentences. Problems may pertain-to persons.Logical formLearned from1 160 sentences. A male can be a problem.Logical formLearned from1 156 sentences. Problems can be widespread.Logical formLearned from1 151 sentences. A problem can be practical.Logical formLearned from1 143 sentences. A country may have problems.Logical formLearned from1 140 sentences. A problem can be a problem.Logical formLearned from1 120 sentences. A problem can be related.Logical formLearned from1 119 sentences. A problem can be personal.Logical formLearned from1 110 sentences.