Question: what event inspired the name of rocky road ice cream
[{'answer': 'Great Depression', 'provenance': [{'wikipedia_id': '978236', 'title': 'Rocky road (ice cream)', 'start_paragraph_id': 1, 'start_character': 756, 'end_paragraph_id': 1, 'end_character': 772, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '978236', 'title': 'Rocky road (ice cream)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1059, 'bleu_score': 0.988603523410381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13056102866952103823}, 'section': 'Section::::Abstract.'}]}]