Question: when do the premier league teams enter the league cup
[{'answer': 'second round', 'provenance': [{'wikipedia_id': '54286829', 'title': '2017–18 EFL Cup', 'start_paragraph_id': 5, 'start_character': 356, 'end_paragraph_id': 5, 'end_character': 368, 'bleu_score': 1.0, 'section': 'Section::::Access.\n'}]}, {'provenance': [{'wikipedia_id': '54286829', 'title': '2017–18 EFL Cup', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 455, 'bleu_score': 0.601510759115352, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8860093668964913177}, 'section': 'Section::::Access.\n'}]}]