Question: who does the law relating to hazardous substances protect
[{'answer': 'employees and other persons', 'provenance': [{'wikipedia_id': '8052688', 'title': 'Control of Substances Hazardous to Health Regulations 2002', 'start_paragraph_id': 1, 'start_character': 173, 'end_paragraph_id': 1, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8052688', 'title': 'Control of Substances Hazardous to Health Regulations 2002', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 660, 'bleu_score': 0.979484453366057, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10460076522305993608}, 'section': 'Section::::Abstract.'}]}]