Question: when did france lose alsace and lorraine to germany
[{'answer': '1871', 'provenance': [{'wikipedia_id': '206997', 'title': 'Alsace-Lorraine', 'start_paragraph_id': 1, 'start_character': 97, 'end_paragraph_id': 1, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '206997', 'title': 'Alsace-Lorraine', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 415, 'bleu_score': 0.87216670428061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15024728640345109345}, 'section': 'Section::::Abstract.'}]}]