Question: how many rhs gardens are there in england
[{'answer': 'four', 'provenance': [{'wikipedia_id': '57532', 'title': 'Royal Horticultural Society', 'start_paragraph_id': 6, 'start_character': 57, 'end_paragraph_id': 6, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::History.:Founders.\n'}]}, {'provenance': [{'wikipedia_id': '57532', 'title': 'Royal Horticultural Society', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 197, 'bleu_score': 0.9383861709333501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5374419355965283726}, 'section': 'Section::::Royal Horticultural Society gardens.\n'}]}]