Question: what is the smallest vertebrate in the world
[{'answer': 'Paedophryne amauensis frogs', 'provenance': [{'wikipedia_id': '6576473', 'title': 'Smallest organisms', 'start_paragraph_id': 46, 'start_character': 62, 'end_paragraph_id': 46, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Animals.:Vertebrates.\n'}]}, {'provenance': [{'wikipedia_id': '6576473', 'title': 'Smallest organisms', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 266, 'bleu_score': 0.6995460536008491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12400611705879938104}, 'section': 'Section::::Animals.:Vertebrates.\n'}]}]