Question: who said stand on the shoulders of giants
[{'answer': 'Bernard of Chartres', 'provenance': [{'wikipedia_id': '2688034', 'title': 'Standing on the shoulders of giants', 'start_paragraph_id': 1, 'start_character': 208, 'end_paragraph_id': 1, 'end_character': 227, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2688034', 'title': 'Standing on the shoulders of giants', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 365, 'bleu_score': 0.822169324804447, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14281210132222292866}, 'section': 'Section::::Abstract.'}]}]