Question: how many stores does toys r us have in the united states
[{'answer': '800', 'provenance': [{'wikipedia_id': '509306', 'title': 'Toys "R" Us', 'start_paragraph_id': 2, 'start_character': 312, 'end_paragraph_id': 2, 'end_character': 315, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '509306', 'title': 'Toys "R" Us', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 431, 'bleu_score': 0.9299383655234801, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10137777214679400370}, 'section': 'Section::::Abstract.'}]}]