Question: when does qualifying for world cup 2022 start
[{'answer': 'not yet been announced'}, {'provenance': [{'wikipedia_id': '17742072', 'title': '2022 FIFA World Cup', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 649, 'bleu_score': 0.6544316543093921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17876600868716714621}, 'section': 'Section::::Qualification.\n'}]}]