Question: 0 k is equal to what temperature in celsius
[{'answer': '− 273.15 ° C'}, {'provenance': [{'wikipedia_id': '1418', 'title': 'Absolute zero', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 532, 'bleu_score': 0.853992782370762, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13643399076612510833}, 'section': 'Section::::Thermodynamics near absolute zero.\n'}]}]