Question: which layer takes up most of the earth's volume
[{'answer': 'space', 'provenance': [{'wikipedia_id': '177602', 'title': 'Outer space', 'start_paragraph_id': 0, 'start_character': 6, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '177602', 'title': 'Outer space', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1205, 'bleu_score': 0.716662289021267, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6629996152961365398}, 'section': 'Section::::Abstract.'}]}]