A reference can be to the world.Logical formLearned from31 sentences. Reference can be to actions.Logical formLearned from31 sentences. A reference can be to persons.Logical formLearned from31 sentences. References can be on a topic.Logical formLearned from31 sentences. An information may be contained in references.Logical formLearned from31 sentences. A reference can be to someone.Logical formLearned from31 sentences. A reference can be to a doctor.Logical formLearned from31 sentences. Reference can be to a father.Logical formLearned from31 sentences. Reference can be to guidelines.Logical formLearned from31 sentences. Reference can be to customers.Logical formLearned from31 sentences. A person may include references.Logical formLearned from31 sentences. Reference can be to objects.Logical formLearned from31 sentences. A reference may pertain-to a weekday.Logical formLearned from31 sentences. Reference can be to directors.Logical formLearned from31 sentences. References can be comic.Logical formLearned from31 sentences.