Question: who is left in the big brother house 20
[{'answer': 'Kaycee Clark', 'provenance': [{'wikipedia_id': '51356934', 'title': 'Big Brother 20 (American season)', 'start_paragraph_id': 4, 'start_character': 540, 'end_paragraph_id': 4, 'end_character': 552, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51356934', 'title': 'Big Brother 20 (American season)', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 619, 'bleu_score': 0.8981331116833101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12059079927781370553}, 'section': 'Section::::Abstract.'}]}]