Question: how much money does the walmart family have
[{'answer': '$ US174. 9 billion'}, {'provenance': [{'wikipedia_id': '3533778', 'title': 'Walton family', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 168, 'bleu_score': 0.737917810621142, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10917628746188420950}, 'section': 'Section::::Abstract.'}]}]