Question: who has the mind stone in infinity war
[{'answer': 'Vision', 'provenance': [{'wikipedia_id': '606571', 'title': 'Infinity Gems', 'start_paragraph_id': 32, 'start_character': 31, 'end_paragraph_id': 32, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::In other media.\n'}]}, {'answer': 'Thanos', 'provenance': [{'wikipedia_id': '606571', 'title': 'Infinity Gems', 'start_paragraph_id': 5, 'start_character': 428, 'end_paragraph_id': 5, 'end_character': 434, 'bleu_score': 1.0, 'section': 'Section::::Publication history.\n'}]}, {'provenance': [{'wikipedia_id': '606571', 'title': 'Infinity Gems', 'start_paragraph_id': 39, 'start_character': 155, 'end_paragraph_id': 39, 'end_character': 1502, 'bleu_score': 0.707439667895666, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4174522346778664198}, 'section': 'Section::::In other media.:Film.\n'}]}]