Question: what was kurtz doing in the heart of darkness
[{'answer': 'Kurtz is an ivory trader', 'provenance': [{'wikipedia_id': '228222', 'title': 'Kurtz (Heart of Darkness)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::In the novella.\n'}]}, {'provenance': [{'wikipedia_id': '228222', 'title': 'Kurtz (Heart of Darkness)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 458, 'bleu_score': 0.9751504244977051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10353729737677143868}, 'section': 'Section::::In the novella.\n'}]}]