Question: who plays shannon on how i met your mother
[{'answer': 'Walder', 'provenance': [{'wikipedia_id': '34126789', 'title': 'Katie Walder', 'start_paragraph_id': 0, 'start_character': 6, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '34126789', 'title': 'Katie Walder', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 456, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11261496942344139250}, 'section': 'Section::::Career.\n'}]}]