Question: what is the leader of a council called
[{'answer': 'Leader of the Council', 'provenance': [{'wikipedia_id': '31916397', 'title': 'Leader of the Council', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31916397', 'title': 'Leader of the Council', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 92, 'bleu_score': 0.8852140475440831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15223490588174542614}, 'section': 'Section::::Abstract.'}]}]