Question: who sings the song if you didn't know
[{'answer': 'Brett Young', 'provenance': [{'wikipedia_id': '52574786', 'title': "In Case You Didn't Know (song)", 'start_paragraph_id': 1, 'start_character': 76, 'end_paragraph_id': 1, 'end_character': 87, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52574786', 'title': "In Case You Didn't Know (song)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 388, 'bleu_score': 0.804725547701266, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9758611463317496853}, 'section': 'Section::::Abstract.'}]}]