Question: how many subs can you make in rugby union
[{'answer': 'a maximum of eight', 'provenance': [{'wikipedia_id': '25405', 'title': 'Rugby union', 'start_paragraph_id': 74, 'start_character': 598, 'end_paragraph_id': 74, 'end_character': 616, 'bleu_score': 1.0, 'section': 'Section::::Laws.:Replacements and substitutions.\n'}]}, {'provenance': [{'wikipedia_id': '25405', 'title': 'Rugby union', 'start_paragraph_id': 74, 'start_character': 0, 'end_paragraph_id': 74, 'end_character': 727, 'bleu_score': 0.9315196407143821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11101438529514440637}, 'section': 'Section::::Laws.:Replacements and substitutions.\n'}]}]