Task: Question Answering
Input (English): Process:  -Ice forms inside a cloud -Ice inside the cloud bumps around and causes electrostatic charges -The cloud becomes a thundercloud -Electrostatic energy builds and forms a strong negative charge -Positive energy is attracted to the negative energy in the cloud -This positive energy gathers on the ground -The positive energy connects with the negative energy and forms lightning.
 Question: What is the effect of more coal mixes with hot air on more or more powerful lightning.?
Output (English): none