only thing that relates this song with the story is that in both 'story and song' one thing is common that is human life has no purpose. Martin Esslin, who used the turm absurd for first time, says that the number of people for whom God is dead has greatly increased in the present century. The theater of the Absurd is one of the ways of facing up to a universe that has lost its meaning and purpose. So the purposelessness is the right meaning of the song. If you wrote in this sense than I hope you will be able to get good marks. So don't worry beause whether your answer is to the point or not now its useless to be worried. So be possitive and happy.