Question: where did most of the fighting take place during ww1
[{'answer': 'The Western Front', 'provenance': [{'wikipedia_id': '51499', 'title': 'Western Front (World War I)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51499', 'title': 'Western Front (World War I)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 566, 'bleu_score': 0.9792717993254391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11958061602036605460}, 'section': 'Section::::Abstract.'}]}]