A person may run into problems.Logical formLearned from262 sentences. A problem can be insoluble.Logical formLearned from262 sentences. Information can be about a problem.Logical formLearned from260 sentences. Problems can be geometric.Logical formLearned from260 sentences. Problems can be ones.Logical formLearned from260 sentences. An answer can be to problems.Logical formLearned from259 sentences. Problems can be knotty.Logical formLearned from259 sentences. Problems can be assigned.Logical formLearned from259 sentences. Problems can be formidable.Logical formLearned from259 sentences. Problems can be with a car.Logical formLearned from258 sentences. Problems may face a nation.Logical formLearned from258 sentences. A scale may pertain-to problems.Logical formLearned from257 sentences. A (drug problem) may pertain-to a country.Logical formLearned from257 sentences. Problems can be monetary.Logical formLearned from256 sentences. A solution can be for problems.Logical formLearned from255 sentences.