A book may play a role.Logical formLearned from52 sentences. Officers may play a role.Logical formLearned from52 sentences. A role can be in policymaking.Logical formLearned from52 sentences. A role can be required.Logical formLearned from52 sentences. A role can be humble.Logical formLearned from52 sentences. A role can be as arbiter.Logical formLearned from52 sentences. Opposition can be to a role.Logical formLearned from52 sentences. Authorities may play a role.Logical formLearned from52 sentences. A campaign may play a role.Logical formLearned from52 sentences. A role may pertain-to an employer.Logical formLearned from52 sentences. A role may be played by the medias.Logical formLearned from52 sentences. A career may include roles.Logical formLearned from52 sentences. Oceans may play a role.Logical formLearned from52 sentences. A role can be decorative.Logical formLearned from52 sentences. A role may pertain-to a captain.Logical formLearned from52 sentences.