Question: when was the women's army corps established
[{'answer': '15 May 1942', 'provenance': [{'wikipedia_id': '1468292', 'title': "Women's Army Corps", 'start_paragraph_id': 1, 'start_character': 159, 'end_paragraph_id': 1, 'end_character': 170, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1468292', 'title': "Women's Army Corps", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 442, 'bleu_score': 0.947703439108541, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12102016991445531276}, 'section': 'Section::::Abstract.'}]}]