Contributors can be countrymen.Logical formLearned from4 sentences. Contributors may pertain-to a study.Logical formLearned from4 sentences. Contributors can be to a president.Logical formLearned from4 sentences. Developing countries can be contributors to a problem.Logical formLearned from4 sentences. A contributor can be to a warming of an environment.Logical formLearned from4 sentences. Gas may be seen as a contributor to a warming of an environment.Logical formLearned from4 sentences. A visit can be with (campaign contributors).Logical formLearned from4 sentences. A contributor can be to a desirability.Logical formLearned from4 sentences. Physical appearance can be a contributor to a desirability.Logical formLearned from4 sentences. Contributors may pertain-to a (lobbying group).Logical formLearned from4 sentences. Big business can be a contributor.Logical formLearned from4 sentences. Contributors can be to revenue.Logical formLearned from4 sentences. A person can be (campaign contributors).Logical formLearned from4 sentences. A contributor can be a bounce.Logical formLearned from4 sentences. A male can be a contributor to a US-city.Logical formLearned from4 sentences.