Question: who played rhoda on mary tyler moore show
[{'answer': 'Harper', 'provenance': [{'wikipedia_id': '351501', 'title': 'Valerie Harper', 'start_paragraph_id': 0, 'start_character': 8, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '351501', 'title': 'Valerie Harper', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 328, 'bleu_score': 0.877237655501598, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5012963730838549878}, 'section': 'Section::::Career.:Television.\n'}]}]