Question: who killed the king in the dragon prince
[{'answer': 'the humans', 'provenance': [{'wikipedia_id': '57960893', 'title': 'The Dragon Prince', 'start_paragraph_id': 3, 'start_character': 196, 'end_paragraph_id': 3, 'end_character': 206, 'bleu_score': 1.0, 'section': 'Section::::Setting and synopsis.\n'}]}, {'provenance': [{'wikipedia_id': '57960893', 'title': 'The Dragon Prince', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 704, 'bleu_score': 0.615977335039339, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5513824900533241169}, 'section': 'Section::::Setting and synopsis.\n'}]}]