Question: who wrote go back to you selena gomez
[{'answer': 'Amy Allen', 'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 1, 'start_character': 84, 'end_paragraph_id': 1, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Selena Gomez', 'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 0, 'start_character': 13, 'end_paragraph_id': 0, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Parrish Warrington', 'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Diederik Van Elsas', 'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 1, 'start_character': 115, 'end_paragraph_id': 1, 'end_character': 133, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Micah Premnath', 'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 1, 'start_character': 135, 'end_paragraph_id': 1, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '57287293', 'title': 'Back to You (Selena Gomez song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 410, 'bleu_score': 0.8505765052587131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18286179423738161114}, 'section': 'Section::::Abstract.'}]}]