Question: in which session of the indian national congress was the poorna swaraj resolution adopted
[{'answer': 'December 1929', 'provenance': [{'wikipedia_id': '4332530', 'title': 'Purna Swaraj', 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4332530', 'title': 'Purna Swaraj', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 361, 'bleu_score': 0.605722455298358, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9915697068801505525}, 'section': 'Section::::Abstract.'}]}]