Question: how many stores does king of prussia have
[{'answer': 'over 400'}, {'provenance': [{'wikipedia_id': '532177', 'title': 'King of Prussia (mall)', 'start_paragraph_id': 7, 'start_character': 16, 'end_paragraph_id': 7, 'end_character': 1005, 'bleu_score': 0.8417846892725841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3336805157890785535}, 'section': 'Section::::Description.\n'}]}]