Question: who plays lily's sister on gossip girl
[{'answer': 'Sheila Kelley', 'provenance': [{'wikipedia_id': '13345121', 'title': 'List of Gossip Girl characters', 'start_paragraph_id': 92, 'start_character': 903, 'end_paragraph_id': 92, 'end_character': 916, 'bleu_score': 1.0, 'section': 'Section::::Guest stars.\n'}]}, {'provenance': [{'wikipedia_id': '13345121', 'title': 'List of Gossip Girl characters', 'start_paragraph_id': 92, 'start_character': 0, 'end_paragraph_id': 92, 'end_character': 1437, 'bleu_score': 0.9824267944374651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6235995630982323389}, 'section': 'Section::::Guest stars.\n'}]}]