Question: how many stocks are in the wilshire 5000
[{'answer': '3,492'}, {'provenance': [{'wikipedia_id': '1039646', 'title': 'Wilshire 5000', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 744, 'bleu_score': 0.9106508016857511, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6855747971187515647}, 'section': 'Section::::Abstract.'}]}]