Task: Question Answering
Input (English): passage: Flat feet (also called pes planus or fallen arches) is a postural deformity in which the arches of the foot collapse, with the entire sole of the foot coming into complete or near-complete contact with the ground. An estimated 20--30% of the general population have an arch that simply never develops in one or both feet.
 question: are flat feet the same as fallen arches?
Output (English): Yes