NDA English Rearranging Sentences in a Paragraph

The correct sequence is RSQP. The sentence SI describes how hope springs eternally in the heart of man. The next sentence should be R because it describes the elements of hope and how they are nursed by nature. Thus the next sentence should be S which describes the nature and ideal of hope. The following sentence should be Q because it describes love, friendship and youth perish and is in continuation of S. The next sentence should be its continuity that all these perish but hope remains and hence P. It is in continuation of S6.