Question: a country with an elected president as head of state is called
[{'answer': 'sovereign state', 'provenance': [{'wikipedia_id': '13456', 'title': 'Head of state', 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13456', 'title': 'Head of state', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 299, 'bleu_score': 0.9118021019905901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11266376142483491700}, 'section': 'Section::::Abstract.'}]}]