Some contributors can be from some countries.Logical formLearned from6 sentences. Contributor may infringe a patent.Logical formLearned from6 sentences. A text may give attribution to a contributor.Logical formLearned from6 sentences. A contributor can be to peacekeeping.Logical formLearned from6 sentences. Data can be from some contributors.Logical formLearned from6 sentences. Contributors can be to a specification.Logical formLearned from6 sentences. Views may pertain-to contributors.Logical formLearned from6 sentences. Contributors can be persons.Logical formLearned from6 sentences. A contributor can be to an (energy security).Logical formLearned from6 sentences. Contributors can be to an endowment.Logical formLearned from6 sentences. A contributor can be to (acid rain).Logical formLearned from6 sentences. A contributor can be to a war.Logical formLearned from6 sentences. Contributors can be to a plan.Logical formLearned from6 sentences. A contributor can be to a service.Logical formLearned from6 sentences. A contributor can be to international peace.Logical formLearned from6 sentences.