Question: when does boomer find out she a cylon
[{'answer': "Kobol 's Last Gleaming", 'provenance': [{'wikipedia_id': '2836350', 'title': 'Number Eight (Battlestar Galactica)', 'start_paragraph_id': 6, 'start_character': 550, 'end_paragraph_id': 6, 'end_character': 572, 'bleu_score': 1.0, 'section': 'Section::::Notable copies.:Sharon "Boomer" Valerii.:Life on Caprica and Galactica.\n'}]}, {'answer': "`` Kobol 's Last Gleaming ''"}, {'answer': "In the episode `` Kobol 's Last Gleaming ''"}, {'provenance': [{'wikipedia_id': '2836350', 'title': 'Number Eight (Battlestar Galactica)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3342385262166486327}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2836350', 'title': 'Number Eight (Battlestar Galactica)', 'section': 'Section::::Notable copies.:Sharon "Boomer" Valerii.:Life on Caprica and Galactica.\n', 'start_paragraph_id': 6, 'end_paragraph_id': 6, 'meta': {'evidence_span': ['In "Kobol\'s Last Gleaming", Commander Adama sends Boomer on a mission to destroy the Cylon basestar orbiting Kobol; and after her return, she shoots Adama twice in the chest, putting him in a coma and revealing her nature to the crew.', 'Lieutenant Junior Grade Sharon "Boomer" Valerii is a Cylon sleeper agent programmed with false memories of being raised in the mining colony Troy', "Kobol's"]}}]}]