Question: who has the longest last name in mlb history
[{'answer': 'Saltalamacchia', 'provenance': [{'wikipedia_id': '4266592', 'title': 'Jarrod Saltalamacchia', 'start_paragraph_id': 0, 'start_character': 7, 'end_paragraph_id': 0, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4266592', 'title': 'Jarrod Saltalamacchia', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 229, 'bleu_score': 0.793638566878413, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2710128525590237405}, 'section': 'Section::::Abstract.'}]}]