Question: what nitrogenous bases are found in a molecule of rna (ribonucleic acid)
[{'answer': 'guanine', 'provenance': [{'wikipedia_id': '25758', 'title': 'RNA', 'start_paragraph_id': 1, 'start_character': 588, 'end_paragraph_id': 1, 'end_character': 595, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'uracil', 'provenance': [{'wikipedia_id': '25758', 'title': 'RNA', 'start_paragraph_id': 1, 'start_character': 597, 'end_paragraph_id': 1, 'end_character': 603, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'adenine', 'provenance': [{'wikipedia_id': '25758', 'title': 'RNA', 'start_paragraph_id': 1, 'start_character': 605, 'end_paragraph_id': 1, 'end_character': 612, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'cytosine', 'provenance': [{'wikipedia_id': '25758', 'title': 'RNA', 'start_paragraph_id': 1, 'start_character': 618, 'end_paragraph_id': 1, 'end_character': 626, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25758', 'title': 'RNA', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 777, 'bleu_score': 0.983804329702269, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13274444738874081499}, 'section': 'Section::::Abstract.'}]}]