Question: what is the term for a charged atom
[{'answer': 'ion', 'provenance': [{'wikipedia_id': '18963787', 'title': 'Ion', 'start_paragraph_id': 1, 'start_character': 3, 'end_paragraph_id': 1, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18963787', 'title': 'Ion', 'start_paragraph_id': 1, 'start_character': 221, 'end_paragraph_id': 1, 'end_character': 596, 'bleu_score': 0.5664439585069301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13243566138708299044}, 'section': 'Section::::Abstract.'}]}]