A problem may be took.Logical formLearned from223 sentences. A problem can be recurrent.Logical formLearned from222 sentences. Problems can be well-known.Logical formLearned from222 sentences. A problem can be in itself.Logical formLearned from222 sentences. Classes can be constituted-of-or-filled-with problems.Logical formLearned from221 sentences. A person can be (problem solver).Logical formLearned from221 sentences. A problem can be with a plan.Logical formLearned from221 sentences. Problems can be apparent.Logical formLearned from221 sentences. Problems can be in a us-state.Logical formLearned from221 sentences. Problems can be for a government.Logical formLearned from221 sentences. A problem can be a problem.Logical formLearned from220 sentences. A (drug problem) can be serious.Logical formLearned from220 sentences. A person may deal with a problem.Logical formLearned from220 sentences. Solutions can be to problems.Logical formLearned from220 sentences. Problems may face the world.Logical formLearned from220 sentences.