Task: Pos Tagging
Input (English): For the environmental centre that host of the 13th annual Maryland Envirothon state level event in 2002 , what 's the population of the town where the centre is located ?
Output (English): IN DT JJ NN IN NN IN DT CD JJ NNP NNP NN NN NN IN CD , WP VBZ DT NN IN DT NN WRB DT NN VBZ VBN .