A role may pertain-to a moderator.Logical formLearned from40 sentences. A teacher may play a role.Logical formLearned from40 sentences. A role can be key.Logical formLearned from40 sentences. A person may play a (lead role).Logical formLearned from40 sentences. Violence may play a role.Logical formLearned from40 sentences. A role may pertain-to agents.Logical formLearned from40 sentences. A role can be in mathematics.Logical formLearned from40 sentences. References can be to a role.Logical formLearned from40 sentences. A role can be in supporting.Logical formLearned from40 sentences. Roles may pertain-to partners.Logical formLearned from40 sentences. A role may pertain-to a (selection board).Logical formLearned from40 sentences. A role may pertain-to a parent.Logical formLearned from40 sentences. A role may be created.Logical formLearned from40 sentences. An event may play a role.Logical formLearned from40 sentences. A male may take a (title role).Logical formLearned from40 sentences.