Question: when did the eec change to the eu
[{'answer': '1993', 'provenance': [{'wikipedia_id': '9578', 'title': 'European Economic Community', 'start_paragraph_id': 1, 'start_character': 234, 'end_paragraph_id': 1, 'end_character': 238, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9578', 'title': 'European Economic Community', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 416, 'bleu_score': 0.9720210313175831, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8479751904985661421}, 'section': 'Section::::Abstract.'}]}]