Question: how many world heritage sites in czech republic
[{'answer': '12', 'provenance': [{'wikipedia_id': '37724922', 'title': 'List of World Heritage Sites in the Czech Republic', 'start_paragraph_id': 18, 'start_character': 10, 'end_paragraph_id': 18, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Tentative list.\n'}]}, {'provenance': [{'wikipedia_id': '37724922', 'title': 'List of World Heritage Sites in the Czech Republic', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 610, 'bleu_score': 0.8564120349812171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1161899786153550071}, 'section': 'Section::::Abstract.'}]}]