Question: who made major contributions to environmental protection in the early 1900s
[{'answer': 'President Roosevelt', 'provenance': [{'wikipedia_id': '45441', 'title': 'Conservation movement', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::History.:Conservation in the United States.\n'}]}, {'provenance': [{'wikipedia_id': '45441', 'title': 'Conservation movement', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 559, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17743243182553643686}, 'section': 'Section::::History.:Conservation in the United States.\n'}]}]