Question: who did the dodgers trade matt kemp for
[{'answer': 'Joe Wieland', 'provenance': [{'wikipedia_id': '10359695', 'title': 'Matt Kemp', 'start_paragraph_id': 62, 'start_character': 114, 'end_paragraph_id': 62, 'end_character': 125, 'bleu_score': 1.0, 'section': 'Section::::Major leagues.:San Diego Padres.\n'}]}, {'answer': 'Yasmani Grandal', 'provenance': [{'wikipedia_id': '10359695', 'title': 'Matt Kemp', 'start_paragraph_id': 62, 'start_character': 127, 'end_paragraph_id': 62, 'end_character': 142, 'bleu_score': 1.0, 'section': 'Section::::Major leagues.:San Diego Padres.\n'}]}, {'answer': 'Zach Eflin', 'provenance': [{'wikipedia_id': '10359695', 'title': 'Matt Kemp', 'start_paragraph_id': 62, 'start_character': 148, 'end_paragraph_id': 62, 'end_character': 158, 'bleu_score': 1.0, 'section': 'Section::::Major leagues.:San Diego Padres.\n'}]}, {'provenance': [{'wikipedia_id': '10359695', 'title': 'Matt Kemp', 'start_paragraph_id': 62, 'start_character': 0, 'end_paragraph_id': 62, 'end_character': 461, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7536826463025874155}, 'section': 'Section::::Major leagues.:San Diego Padres.\n'}]}]