Question: when did india first participated in olympics football
[{'answer': '1948', 'provenance': [{'wikipedia_id': '33383363', 'title': 'History of Indian football', 'start_paragraph_id': 14, 'start_character': 16, 'end_paragraph_id': 14, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::1900–1950.\n'}]}, {'provenance': [{'wikipedia_id': '33383363', 'title': 'History of Indian football', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 1092, 'bleu_score': 0.9699687061070871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8157704529262785443}, 'section': 'Section::::1900–1950.\n'}]}]