Question: what did hunter gatherers do to sustain themselves
[{'answer': 'by foraging', 'provenance': [{'wikipedia_id': '210098', 'title': 'Hunter-gatherer', 'start_paragraph_id': 1, 'start_character': 87, 'end_paragraph_id': 1, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '210098', 'title': 'Hunter-gatherer', 'start_paragraph_id': 1, 'start_character': 8, 'end_paragraph_id': 1, 'end_character': 263, 'bleu_score': 0.867676370835962, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10222594177424826906}, 'section': 'Section::::Abstract.'}]}]