Question: actress who plays trixie on call the midwife
[{'answer': 'Helen George', 'provenance': [{'wikipedia_id': '38327189', 'title': 'Helen George', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '38327189', 'title': 'Helen George', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 296, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2330946573361692401}, 'section': 'Section::::Abstract.'}]}]