Question: when was lokpal bill first introduced in indian parliament
[{'answer': '1968', 'provenance': [{'wikipedia_id': '17177939', 'title': 'Lokpal', 'start_paragraph_id': 5, 'start_character': 249, 'end_paragraph_id': 5, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '17177939', 'title': 'Lokpal', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 713, 'bleu_score': 0.869305108006263, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15773796818967564551}, 'section': 'Section::::History.\n'}]}]