Question: where does the last name cobb come from
[{'answer': 'Anglo - Saxon origin'}, {'provenance': [{'wikipedia_id': '4530702', 'title': 'Cobb (surname)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 67, 'bleu_score': 0.6997522298221911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6853306375569648463}, 'section': 'Section::::Abstract.'}]}]