Question: who plays ra's al ghul daughter in arrow
[{'answer': 'Katrina Law', 'provenance': [{'wikipedia_id': '26901226', 'title': 'Katrina Law', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26901226', 'title': 'Katrina Law', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 176, 'bleu_score': 0.7237489915370671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17722408811227866652}, 'section': 'Section::::Abstract.'}]}]