Answer:
I go up when the rain comes down
I have a bank, but no money. I have a bed but do not sleep.I have a mouth but cannot eat. What am I?
I had a bright start but I couldn't take the pressure. I consume everything yet I don't eat anything.
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
Angels and pilots work with me.
The answer I give is yes, but what I mean is no. What was the question?