Question: what group of the periodic table is potassium in
[{'answer': 'alkali metals', 'provenance': [{'wikipedia_id': '23055', 'title': 'Potassium', 'start_paragraph_id': 1, 'start_character': 449, 'end_paragraph_id': 1, 'end_character': 462, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23055', 'title': 'Potassium', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 938, 'bleu_score': 0.703825157095462, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10485015898272394010}, 'section': 'Section::::Abstract.'}]}]