Question: sharks rays and skates belong to what group
[{'answer': 'Elasmobranchii', 'provenance': [{'wikipedia_id': '5232', 'title': 'Chondrichthyes', 'start_paragraph_id': 1, 'start_character': 330, 'end_paragraph_id': 1, 'end_character': 344, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5232', 'title': 'Chondrichthyes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 490, 'bleu_score': 0.9216570252803391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12764200232004287593}, 'section': 'Section::::Abstract.'}]}]