Question: who led investigation into the legality of apple’s accounting practices during the 2000s
[{'answer': "the EU 's competition commissioner", 'provenance': [{'wikipedia_id': '23818735', 'title': 'Criticism of Apple Inc.', 'start_paragraph_id': 85, 'start_character': 89, 'end_paragraph_id': 85, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Tax practices.\n'}]}, {'provenance': [{'wikipedia_id': '23818735', 'title': 'Criticism of Apple Inc.', 'start_paragraph_id': 85, 'start_character': 243, 'end_paragraph_id': 85, 'end_character': 843, 'bleu_score': 0.7237829726329741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14997661282716264658}, 'section': 'Section::::Tax practices.\n'}]}]