Question: what does the j in sainsbury's stand for
[{'answer': 'John', 'provenance': [{'wikipedia_id': '169880', 'title': "Sainsbury's", 'start_paragraph_id': 1, 'start_character': 174, 'end_paragraph_id': 1, 'end_character': 178, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '169880', 'title': "Sainsbury's", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 635, 'bleu_score': 0.8272468276007721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2127146629979367029}, 'section': 'Section::::Abstract.'}]}]