Question: what was the role of dark energy in the early universe
[{'answer': 'drive cosmic inflation', 'provenance': [{'wikipedia_id': '19604228', 'title': 'Dark energy', 'start_paragraph_id': 10, 'start_character': 123, 'end_paragraph_id': 10, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::History of discovery and previous speculation.:Inflationary dark energy.\n'}]}, {'provenance': [{'wikipedia_id': '19604228', 'title': 'Dark energy', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 842, 'bleu_score': 0.985238839858627, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10176980830555829917}, 'section': 'Section::::History of discovery and previous speculation.:Inflationary dark energy.\n'}]}]