Question: who discovered the inner core of the earth
[{'answer': 'Inge Lehmann', 'provenance': [{'wikipedia_id': '2939202', 'title': "Earth's inner core", 'start_paragraph_id': 4, 'start_character': 124, 'end_paragraph_id': 4, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Discovery.\n'}]}, {'provenance': [{'wikipedia_id': '2939202', 'title': "Earth's inner core", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 483, 'bleu_score': 0.620757285769584, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16476348781778045673}, 'section': 'Section::::Discovery.\n'}]}]