Question: when can a player be substituted in soccer
[{'answer': 'during a stoppage in play', 'provenance': [{'wikipedia_id': '2401985', 'title': 'Substitute (association football)', 'start_paragraph_id': 17, 'start_character': 33, 'end_paragraph_id': 17, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Relevant laws.\n'}]}, {'provenance': [{'wikipedia_id': '2401985', 'title': 'Substitute (association football)', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 492, 'bleu_score': 0.977139080690077, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12987743980684960552}, 'section': 'Section::::Relevant laws.\n'}]}]