Question: a system of fortifications along france's border
[{'answer': 'Maginot Line', 'provenance': [{'wikipedia_id': '20351', 'title': 'Maginot Line', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'The Maginot Line', 'provenance': [{'wikipedia_id': '20351', 'title': 'Maginot Line', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20351', 'title': 'Maginot Line', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 488, 'bleu_score': 0.858826396806137, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17938700451638368817}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20351', 'title': 'Maginot Line', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17938700451638368817}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28014906', 'title': 'Fortified Sector of Flanders', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The sector was part of a system of fortifications that, in other sectors, included the Maginot Line.', 'included the Maginot Line', 'The Fortified Sector of Flanders ("Secteur Fortifié des Flandres") was the French military organization that in 1940 controlled the section of the French border with Belgium between Lille and the North Sea. The sector was part of a system of fortifications that, in other sectors, included the Maginot Line. In the case of the Flanders sector, no large fortifications of the kind typified by the Maginot Line were built in the area. Fortifications were confined to almost two hundred blockhouses built during the 1930s']}}]}, {'provenance': [{'wikipedia_id': '20351', 'title': 'Maginot Line', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Maginot Line (, ), named after the French Minister of War André Maginot, is a line of concrete fortifications, obstacles, and weapon installations built by France in the 1930s to deter invasion by Germany and force them to move around the fortifications.', 'The Maginot Line (, ), named after the French Minister of War André Maginot, is a line of concrete fortifications', 'The Maginot Line (, ), named after the French Minister of War André Maginot, is a line of concrete fortifications, obstacles, and weapon installations built by France in the 1930s']}}]}]