A role can be essential.Logical formLearned from31 sentences. Genocide can be over a role.Logical formLearned from31 sentences. Discussion can be about a role.Logical formLearned from31 sentences. A role can be in protecting an environment.Logical formLearned from30 sentences. A person can be happy with a role.Logical formLearned from30 sentences. A role can be in a social life.Logical formLearned from30 sentences. A role can be in monster.Logical formLearned from30 sentences. A role can be in a post.Logical formLearned from30 sentences. A railway may play a role.Logical formLearned from30 sentences. Derivatives may play a role.Logical formLearned from30 sentences. A male may perform some roles.Logical formLearned from30 sentences. A role may be concerned.Logical formLearned from30 sentences. A structure may play a role.Logical formLearned from30 sentences. A role can be in an opera.Logical formLearned from30 sentences. A role may play a male.Logical formLearned from30 sentences.