A reference can be to some party.Logical formLearned from27 sentences. A reference can be to years.Logical formLearned from27 sentences. Reference can be to a tribe.Logical formLearned from27 sentences. Reference can be to a belief.Logical formLearned from27 sentences. A book can be (reference book).Logical formLearned from27 sentences. A reference can be to a family.Logical formLearned from27 sentences. References can be to passages.Logical formLearned from27 sentences. (Reference points) may pertain-to persons.Logical formLearned from27 sentences. A reference may be stored.Logical formLearned from27 sentences. A reference can be to a resource.Logical formLearned from27 sentences. References can be to a primary literature.Logical formLearned from27 sentences. Reference can be to an end.Logical formLearned from27 sentences. (Reference works) can be basic.Logical formLearned from27 sentences. A system can be constituted-of-or-filled-with reference.Logical formLearned from27 sentences. References can be to policies.Logical formLearned from27 sentences.