A person may experience problems.Logical formLearned from414 sentences. Solutions can be to problems.Logical formLearned from413 sentences. Problems may be found.Logical formLearned from413 sentences. Problems may undergo a treatment.Logical formLearned from410 sentences. Problems can be selected.Logical formLearned from410 sentences. (Energy problems) may pertain-to a country.Logical formLearned from408 sentences. A problem can be with a female.Logical formLearned from407 sentences. A US-president may have a problem.Logical formLearned from407 sentences. Problems may undergo a discussion.Logical formLearned from407 sentences. Persons may face a problem.Logical formLearned from406 sentences. Persons may fix a problem.Logical formLearned from406 sentences. A problem may undergo a discussion.Logical formLearned from405 sentences. Problems can be in the past.Logical formLearned from405 sentences. Part may pertain-to problems.Logical formLearned from402 sentences. A source can be constituted-of-or-filled-with problems.Logical formLearned from400 sentences.