Question: how many miles up is the van allen belt
[{'answer': '124 -- 620 miles'}, {'provenance': [{'wikipedia_id': '59953', 'title': 'Van Allen radiation belt', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 511, 'bleu_score': 0.9053082392476911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17683950412825981635}, 'section': 'Section::::Discovery.\n'}]}]