Question: who wrote the song ps i love you
[{'answer': 'Gordon Jenkins', 'provenance': [{'wikipedia_id': '4750176', 'title': 'P.S. I Love You (1934 song)', 'start_paragraph_id': 1, 'start_character': 62, 'end_paragraph_id': 1, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Johnny Mercer', 'provenance': [{'wikipedia_id': '4750176', 'title': 'P.S. I Love You (1934 song)', 'start_paragraph_id': 1, 'start_character': 92, 'end_paragraph_id': 1, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4750176', 'title': 'P.S. I Love You (1934 song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 137, 'bleu_score': 0.9243880458347601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15431111596204538329}, 'section': 'Section::::Abstract.'}]}]