Task: Pos Tagging
Input (English): Operating in the mid-20th century , what train rode on a railroad started in the 1890s and with one of two end points ending in the most populous city in America ?
Output (English): NN IN DT JJ NN , WP VBP NN IN DT NN VBN IN DT CD CC IN CD IN CD NN NNS VBG IN DT RBS JJ NN IN NNP .