Question: how to call a toll free number from uk
[{'answer': '0800', 'provenance': [{'wikipedia_id': '406726', 'title': 'Toll-free telephone number', 'start_paragraph_id': 2, 'start_character': 39, 'end_paragraph_id': 2, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '0808', 'provenance': [{'wikipedia_id': '406726', 'title': 'Toll-free telephone number', 'start_paragraph_id': 137, 'start_character': 180, 'end_paragraph_id': 137, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::Around the world.:United Kingdom.\n'}]}, {'answer': '0500', 'provenance': [{'wikipedia_id': '406726', 'title': 'Toll-free telephone number', 'start_paragraph_id': 22, 'start_character': 363, 'end_paragraph_id': 22, 'end_character': 367, 'bleu_score': 1.0, 'section': 'Section::::History.:Modern direct-dial systems.\n'}]}, {'provenance': [{'wikipedia_id': '406726', 'title': 'Toll-free telephone number', 'start_paragraph_id': 137, 'start_character': 0, 'end_paragraph_id': 137, 'end_character': 391, 'bleu_score': 0.96746874041754, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10070877208522096041}, 'section': 'Section::::Around the world.:United Kingdom.\n'}]}]