A problem may undergo an event.Logical formLearned from275 sentences. A problem can be in a world-city.Logical formLearned from275 sentences. A company may have problems.Logical formLearned from275 sentences. A person may have technical problems.Logical formLearned from275 sentences. A gravity may pertain-to a problem.Logical formLearned from274 sentences. Problems may start.Logical formLearned from274 sentences. Problems can be worse.Logical formLearned from274 sentences. Problems can be nonlinear.Logical formLearned from274 sentences. A problem can be apparent.Logical formLearned from274 sentences. (Heart problems) may pertain-to a male.Logical formLearned from273 sentences. Problems can be in a life.Logical formLearned from273 sentences. Problems may be described.Logical formLearned from273 sentences. A problem may solve skills.Logical formLearned from273 sentences. Problems can be competitive.Logical formLearned from273 sentences. Persons may resolve a problem.Logical formLearned from273 sentences.