Question: where does the saying blue monday come from
[{'answer': 'Cardiff University', 'provenance': [{'wikipedia_id': '9057666', 'title': 'Blue Monday (date)', 'start_paragraph_id': 4, 'start_character': 171, 'end_paragraph_id': 4, 'end_character': 189, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '9057666', 'title': 'Blue Monday (date)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 648, 'bleu_score': 0.9567532579243251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5724710858718551355}, 'section': 'Section::::History.\n'}]}]