Question: when was the first international women's day celebrated
[{'answer': 'February 28 , 1909', 'provenance': [{'wikipedia_id': '280746', 'title': "International Women's Day", 'start_paragraph_id': 5, 'start_character': 80, 'end_paragraph_id': 5, 'end_character': 98, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '280746', 'title': "International Women's Day", 'start_paragraph_id': 2, 'start_character': 142, 'end_paragraph_id': 2, 'end_character': 584, 'bleu_score': 0.574109622488161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2617379354740240757}, 'section': 'Section::::Abstract.'}]}]