Question: what season of ncis is the port to port killer in
[{'answer': 'eighth season', 'provenance': [{'wikipedia_id': '27936859', 'title': 'NCIS (season 8)', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27936859', 'title': 'NCIS (season 8)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 132, 'bleu_score': 0.9146912192286941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12633766132854335570}, 'section': 'Section::::Abstract.'}]}]