Question: who did john legend wrote all of me about
[{'answer': "Legend 's wife Chrissy Teigen", 'provenance': [{'wikipedia_id': '40783555', 'title': 'All of Me (John Legend song)', 'start_paragraph_id': 1, 'start_character': 130, 'end_paragraph_id': 1, 'end_character': 159, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40783555', 'title': 'All of Me (John Legend song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 265, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3114325068115843039}, 'section': 'Section::::Abstract.'}]}]