Question: who sings i didn't know my own strength
[{'answer': 'Whitney Houston', 'provenance': [{'wikipedia_id': '23515452', 'title': "I Didn't Know My Own Strength (Whitney Houston song)", 'start_paragraph_id': 0, 'start_character': 31, 'end_paragraph_id': 0, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23515452', 'title': "I Didn't Know My Own Strength (Whitney Houston song)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 153, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15174506206014595824}, 'section': 'Section::::Abstract.'}]}]