Question: how many costas are there in the uk
[{'answer': '2,121', 'provenance': [{'wikipedia_id': '2319383', 'title': 'Costa Coffee', 'start_paragraph_id': 2, 'start_character': 330, 'end_paragraph_id': 2, 'end_character': 335, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2319383', 'title': 'Costa Coffee', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 432, 'bleu_score': 0.7463210863057981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17587096350554319728}, 'section': 'Section::::Abstract.'}]}]