Question: when did the first aldi open in the us
[{'answer': '1976', 'provenance': [{'wikipedia_id': '404177', 'title': 'Aldi', 'start_paragraph_id': 9, 'start_character': 209, 'end_paragraph_id': 9, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]