Question: when did jack maynard start his youtube channel
[{'answer': '19 May 2006', 'provenance': [{'wikipedia_id': '35036496', 'title': 'Conor Maynard', 'start_paragraph_id': 4, 'start_character': 486, 'end_paragraph_id': 4, 'end_character': 497, 'bleu_score': 1.0, 'section': 'Section::::Life and career.:1992–2011: Early life and career.\n'}]}, {'provenance': [{'wikipedia_id': '35036496', 'title': 'Conor Maynard', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 651, 'bleu_score': 0.9222049005369771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 734929567095033711}, 'section': 'Section::::Life and career.:1992–2011: Early life and career.\n'}]}]