Question: when did channel 5 start in the uk
[{'answer': '30 March 1997', 'provenance': [{'wikipedia_id': '28952356', 'title': 'Channel 5 (UK)', 'start_paragraph_id': 60, 'start_character': 296, 'end_paragraph_id': 60, 'end_character': 309, 'bleu_score': 1.0, 'section': 'Section::::Branding.:1997–2002.\n'}]}]