A contributor may pertain-to a country.Logical formLearned from28 sentences. A contributor can be to problems.Logical formLearned from27 sentences. A contributor can be to a rise.Logical formLearned from27 sentences. Contributors can be unpaid.Logical formLearned from27 sentences. A contributor can be to a project.Logical formLearned from27 sentences. A contributor can be to smog.Logical formLearned from27 sentences. A contributor can be to melting polar (ice caps).Logical formLearned from27 sentences. A hotness can be a contributor to melting polar (ice caps).Logical formLearned from27 sentences. A company can be a contributor.Logical formLearned from27 sentences. A male can be a contributor to magazines.Logical formLearned from27 sentences. A contributor can be to forces.Logical formLearned from27 sentences. A country can be a contributor to a coalition.Logical formLearned from27 sentences. Contributors can be to a force.Logical formLearned from27 sentences. A female can be a contributor to a magazine.Logical formLearned from26 sentences. Contributors can be to an issue.Logical formLearned from26 sentences.