Question: In what year was the train service that includes the "Palmetto" introduced?
Sentence (from "Capital Express (Turkey)"): The Capital Express (Turkish: Başkent Ekspresi ) was one of the six daily intercity trains operating between Istanbul and Ankara on the Istanbul-Ankara railway before the Yüksek Hızlı Tren high-speed train service replaced all intercity trains on the line.
Relevant evidence: No