Question: who sings the song it's been a while
[{'answer': 'American rock band Staind', 'provenance': [{'wikipedia_id': '8014627', 'title': "It's Been Awhile", 'start_paragraph_id': 1, 'start_character': 41, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8014627', 'title': "It's Been Awhile", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 560012781732986387}, 'section': 'Section::::Abstract.'}]}]