Question: what is the world of lord of the rings called
[{'answer': 'Middle - earth', 'provenance': [{'wikipedia_id': '23139208', 'title': 'Middle-earth', 'start_paragraph_id': 252, 'start_character': 80, 'end_paragraph_id': 252, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Adaptations.:Middle-earth in other works.\n'}]}, {'provenance': [{'wikipedia_id': '23139208', 'title': 'Middle-earth', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 186, 'bleu_score': 0.626080304904253, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10981757173847683765}, 'section': 'Section::::Abstract.'}]}]