Question: this is a horizontal arrangement of elements in the periodic table
[{'answer': 'period', 'provenance': [{'wikipedia_id': '23053', 'title': 'Periodic table', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23053', 'title': 'Periodic table', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 317, 'bleu_score': 0.958740481558872, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8067735555761881176}, 'section': 'Section::::Grouping methods.:Periods.\n'}]}]