Question: where can ionized hydrogen be found in astronomy
[{'answer': 'star formation', 'provenance': [{'wikipedia_id': '206947', 'title': 'H II region', 'start_paragraph_id': 1, 'start_character': 148, 'end_paragraph_id': 1, 'end_character': 162, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '206947', 'title': 'H II region', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 464, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12084247679328668384}, 'section': 'Section::::Abstract.'}]}]