context: The original route, which operated on October 4, 1883, was from Paris, Gare de l'Est, to Giurgiu in Romania via Munich and Vienna. In Giurgiu, passengers board a ferry across the Danube to Ruse in Bulgaria to take another train to Varna, where they can continue their journey to Istanbul by ferry. In 1885, another route began operations, this time reaching Istanbul by train from Vienna to Belgrade and Niš, transportation to Plovdiv and train to Istanbul.
question: When was the first Orient Express train open?
answers.text: October 4, 1883