A problem can be long-term.Logical formLearned from1 508 sentences. A problem can be acute.Logical formLearned from1 496 sentences. A problem can be widespread.Logical formLearned from1 490 sentences. Problems can be cardiovascular.Logical formLearned from1 452 sentences. Problems may be solved.Logical formLearned from1 428 sentences. An answer can be to problems.Logical formLearned from1 403 sentences. A problem may persist.Logical formLearned from1 396 sentences. A person may see a problem.Logical formLearned from1 384 sentences. A problem can be serious.Logical formLearned from1 374 sentences. Problems can be everyday.Logical formLearned from1 371 sentences. Persons may have a problem.Logical formLearned from1 367 sentences. A problem can be persistent.Logical formLearned from1 365 sentences. Accidents may damage problems.Logical formLearned from1 355 sentences. Problems can be persistent.Logical formLearned from1 343 sentences. Problems may pertain-to a company.Logical formLearned from1 334 sentences.