Question: what is one of the main causes for famine in the world today
[{'answer': 'a decline in food availability', 'provenance': [{'wikipedia_id': '51329', 'title': 'Famine', 'start_paragraph_id': 133, 'start_character': 418, 'end_paragraph_id': 133, 'end_character': 448, 'bleu_score': 1.0, 'section': 'Section::::Causes.\n'}]}, {'provenance': [{'wikipedia_id': '51329', 'title': 'Famine', 'start_paragraph_id': 133, 'start_character': 0, 'end_paragraph_id': 133, 'end_character': 1621, 'bleu_score': 0.9923223148404691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12666333942461973686}, 'section': 'Section::::Causes.\n'}]}]