Question: when does the things they carried take place
[{'answer': 'the Vietnam War', 'provenance': [{'wikipedia_id': '713613', 'title': 'The Things They Carried', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 183, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '713613', 'title': 'The Things They Carried', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 290, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11645940683827557254}, 'section': 'Section::::Abstract.'}]}]