Question: when was the 19th amendment introduced to congress
[{'answer': '1878', 'provenance': [{'wikipedia_id': '31670', 'title': 'Nineteenth Amendment to the United States Constitution', 'start_paragraph_id': 1, 'start_character': 244, 'end_paragraph_id': 1, 'end_character': 248, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]