Question: who is the president and ceo of t-mobile
[{'answer': 'John J. Legere'}, {'provenance': [{'wikipedia_id': '37624450', 'title': 'John Legere', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 205, 'bleu_score': 0.641203284934128, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16198198549336408964}, 'section': 'Section::::Abstract.'}]}]