Question: who plays the she elf in hobbit 2
[{'answer': 'Evangeline Lilly', 'provenance': [{'wikipedia_id': '34496763', 'title': 'Tauriel', 'start_paragraph_id': 2, 'start_character': 161, 'end_paragraph_id': 2, 'end_character': 177, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]