Task: Question Answering
Input (English): Question: Keith is showering, and is washing himself using a bar of soap, and then again with a loofah. Keith's skin will get worse exfoliation, due to the lesser friction, when he washes his body using the 
 Option1: soap 
 Option2: loofah 
 Explanation: Friction is greater when objects have rougher surfaces or are heavier so they press together with greater force.
Output (English): soap