Task: Question Answering
Input (English): Process:  -Coal is mined out of the ground -Coal is pulverized into fine powder -The coal is mixed with hot air -The coal and hot air are blown into a boiler -The coal and hot air burn over a fire -Highly purified water is pumped through pipes in the boiler -The water turns into steam -The steam presses against turbines -The turbines spin -Electricity is produced.
 Question: What is the effect of the price of coal rises on less coal is used.?
Output (English): for