Question: when was the ford sierra launched in the uk
[{'answer': '15 October 1982', 'provenance': [{'wikipedia_id': '232444', 'title': 'Ford Sierra', 'start_paragraph_id': 2, 'start_character': 153, 'end_paragraph_id': 2, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '232444', 'title': 'Ford Sierra', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 367, 'bleu_score': 0.96746874041754, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4197336239001045415}, 'section': 'Section::::Abstract.'}]}]