Question: what percentage of nhl hockey players are canadian
[{'answer': 'slightly less than 50 %', 'provenance': [{'wikipedia_id': '51042112', 'title': 'Race and ethnicity in the NHL', 'start_paragraph_id': 2, 'start_character': 266, 'end_paragraph_id': 2, 'end_character': 289, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51042112', 'title': 'Race and ethnicity in the NHL', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 419, 'bleu_score': 0.9009864719193421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7439215977906105341}, 'section': 'Section::::Abstract.'}]}]