Question: who is beyonce talking about in her song heaven
[{'answer': 'Tina Knowles', 'provenance': [{'wikipedia_id': '41357016', 'title': 'Heaven (Beyoncé song)', 'start_paragraph_id': 1, 'start_character': 401, 'end_paragraph_id': 1, 'end_character': 413, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '41357016', 'title': 'Heaven (Beyoncé song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 859, 'bleu_score': 0.985964042079227, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10660146882078447710}, 'section': 'Section::::Abstract.'}]}]