Answer:
The fisherman asked a tricky question to the genius in order to save his life. He expressed his surprise as to how it would be possible that some so giant can be easily fit inside such a small vase. The genius fell into the trap of the fisherman. He gave an illustration and went inside the vase in the form of smoke. The fisherman closed the knob of the vase and in this way the genius was again trapped inside the vase. The fisherman saved his life from the genius by using his presence of mind.
