Question: who used introspection as a scientific technique for investigating consciousness
[{'answer': 'Wilhelm Wundt', 'provenance': [{'wikipedia_id': '317501', 'title': 'Introspection', 'start_paragraph_id': 6, 'start_character': 31, 'end_paragraph_id': 6, 'end_character': 44, 'bleu_score': 1.0, 'section': 'Section::::In psychology.:Wundt.\n'}]}, {'provenance': [{'wikipedia_id': '317501', 'title': 'Introspection', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1924, 'bleu_score': 0.9848522229494041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11891698238139298533}, 'section': 'Section::::In psychology.:Wundt.\n'}]}]