Question: who plays raj's mother on big bang
[{'answer': 'Alice Amter', 'provenance': [{'wikipedia_id': '16709386', 'title': 'List of The Big Bang Theory and Young Sheldon characters', 'start_paragraph_id': 146, 'start_character': 19, 'end_paragraph_id': 146, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Supporting characters.:"The Big Bang Theory" supporting characters.:Mrs. Koothrappali.\n'}]}, {'provenance': [{'wikipedia_id': '16709386', 'title': 'List of The Big Bang Theory and Young Sheldon characters', 'start_paragraph_id': 146, 'start_character': 0, 'end_paragraph_id': 146, 'end_character': 501, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3515800735628654505}, 'section': 'Section::::Supporting characters.:"The Big Bang Theory" supporting characters.:Mrs. Koothrappali.\n'}]}]