Question: in which type of rna will you find a codon
[{'answer': 'mRNA', 'provenance': [{'wikipedia_id': '20232', 'title': 'Messenger RNA', 'start_paragraph_id': 1, 'start_character': 15, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20232', 'title': 'Messenger RNA', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 540, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5228255480449490485}, 'section': 'Section::::Abstract.'}]}]