Task: Question Answering
Input (English): Paragraph: Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.
 Question: What would happen to the size of the valley created by a tributary stream if the size of the stream were to be increased? 
 Choices: A)the valley would be shallower 
B)the valley would be deeper
Output (English): the valley would be deeper