A (brain chemical) may play a role.Logical formLearned from36 sentences. A role may pertain-to a candidate.Logical formLearned from36 sentences. A role can be an opportunity.Logical formLearned from36 sentences. A person may play some role.Logical formLearned from36 sentences. Biological factors may play a role.Logical formLearned from36 sentences. A role can be in a world.Logical formLearned from36 sentences. A person may accept a role.Logical formLearned from36 sentences. Roles can be for government.Logical formLearned from36 sentences. Psychology may play a role.Logical formLearned from36 sentences. A role can be as provider.Logical formLearned from36 sentences. A role can be in (signal transduction).Logical formLearned from36 sentences. A role may pertain-to an applicant.Logical formLearned from36 sentences. A role may pertain-to an actuary.Logical formLearned from36 sentences. A role can be in human history.Logical formLearned from36 sentences. A role can be on a committee.Logical formLearned from36 sentences.