In the question given below, the passage consists of six sentences. The first and sixth sentences are given at the beginning. The middle four sentences have been removed and jumbled up. They are labelled as, P, Q, R, and S. Find out the proper order for the four sentences.
S1: A noise started above their heads.
P: But, people did not take it seriously.
Q: That was to show everyone that there was something wrong.
R: It was a dangerous thing to do.
S: For, within minutes the ship began to sink.
S6: Nearly 200 lives were lost on a fateful day.
The proper sequence should be