Question: why hydrogen peroxide is used as bleaching agent
[{'answer': 'environmentally safe alternative', 'provenance': [{'wikipedia_id': '14403', 'title': 'Hydrogen peroxide', 'start_paragraph_id': 72, 'start_character': 32, 'end_paragraph_id': 72, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Uses.:Disinfectant.\n'}]}, {'provenance': [{'wikipedia_id': '14403', 'title': 'Hydrogen peroxide', 'start_paragraph_id': 72, 'start_character': 0, 'end_paragraph_id': 72, 'end_character': 243, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 486689268638168537}, 'section': 'Section::::Uses.:Disinfectant.\n'}]}]