Question: what killed the potatoes in the irish potato famine
[{'answer': 'potato blight', 'provenance': [{'wikipedia_id': '14726', 'title': 'Great Famine (Ireland)', 'start_paragraph_id': 2, 'start_character': 57, 'end_paragraph_id': 2, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]