Question: who plays erin's mom on the office
[{'answer': 'Joan Cusack', 'provenance': [{'wikipedia_id': '38764466', 'title': 'Finale (The Office)', 'start_paragraph_id': 8, 'start_character': 470, 'end_paragraph_id': 8, 'end_character': 481, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '38764466', 'title': 'Finale (The Office)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 515, 'bleu_score': 0.921977242733189, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8671237841929300688}, 'section': 'Section::::Plot.\n'}]}]