Question: when is clan of the cave bear set
[{'answer': 'before 18,000 years Before Present'}, {'answer': 'somewhere between 28,000 and 25,000 years BP'}, {'provenance': [{'wikipedia_id': '1106246', 'title': 'The Clan of the Cave Bear', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 428, 'bleu_score': 0.734398435828822, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7082292361916798439}, 'section': 'Section::::Setting.\n'}]}]