Question: elements such as na and k are in the same
[{'answer': 'group', 'provenance': [{'wikipedia_id': '666', 'title': 'Alkali metal', 'start_paragraph_id': 1, 'start_character': 24, 'end_paragraph_id': 1, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '666', 'title': 'Alkali metal', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 587, 'bleu_score': 0.977897140678983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18217255623669285599}, 'section': 'Section::::Abstract.'}]}]