Question: who plays rachel's birth mom on glee
[{'answer': 'Idina Menzel', 'provenance': [{'wikipedia_id': '27540353', 'title': 'Shelby Corcoran', 'start_paragraph_id': 1, 'start_character': 121, 'end_paragraph_id': 1, 'end_character': 133, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27540353', 'title': 'Shelby Corcoran', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 806, 'bleu_score': 0.9853469949554711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6533608799778822803}, 'section': 'Section::::Abstract.'}]}]