Question: where is an abstract located in a paper
[{'answer': 'at the beginning', 'provenance': [{'wikipedia_id': '556400', 'title': 'Abstract (summary)', 'start_paragraph_id': 1, 'start_character': 256, 'end_paragraph_id': 1, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '556400', 'title': 'Abstract (summary)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 523, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12919308278648768552}, 'section': 'Section::::Abstract.'}]}]