Question: when did channel 4 start in the uk
[{'answer': '2 November 1982', 'provenance': [{'wikipedia_id': '6321', 'title': 'Channel 4', 'start_paragraph_id': 1, 'start_character': 135, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6321', 'title': 'Channel 4', 'start_paragraph_id': 1, 'start_character': 50, 'end_paragraph_id': 1, 'end_character': 691, 'bleu_score': 0.832959873932794, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6807350621174828129}, 'section': 'Section::::Abstract.'}]}]