Question: who becomes king of erebor when thorin dies
[{'answer': 'Dáin , his cousin', 'provenance': [{'wikipedia_id': '58143', 'title': 'Thorin Oakenshield', 'start_paragraph_id': 18, 'start_character': 197, 'end_paragraph_id': 18, 'end_character': 217, 'bleu_score': 1.0, 'section': 'Section::::Names and titles.\n'}]}, {'provenance': [{'wikipedia_id': '58143', 'title': 'Thorin Oakenshield', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 230, 'bleu_score': 0.955027111100031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14161098455790303349}, 'section': 'Section::::Names and titles.\n'}]}]