Question: where did the bobo doll experiment take place
[{'answer': 'Stanford University', 'provenance': [{'wikipedia_id': '540025', 'title': 'Bobo doll experiment', 'start_paragraph_id': 4, 'start_character': 71, 'end_paragraph_id': 4, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Experiment of 1961.:Method.\n'}]}, {'provenance': [{'wikipedia_id': '540025', 'title': 'Bobo doll experiment', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 655, 'bleu_score': 0.572922152849007, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18006590543563859219}, 'section': 'Section::::Experiment of 1961.:Method.\n'}]}]