Once upon a time, a crow was very thirsty.
It looked around and saw a jug of water.
But the water level was too low for the crow to reach.
The clever crow had an idea!
It started dropping pebbles into the jug, one by one.
As more pebbles were dropped, the water level rose.
Finally, the water level was high enough for the clever crow to drink.
The crow quenched its thirst and flew away happily.
