Direction: In this section, each item consists of six sentences of a passage. The first and the sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.

S1 : The government attributes the shortage of coal to an improved load factor.
S6 : Sometimes, the amount of shale in the despatch goes up to 45 per cent.
P : It requires only some planning to ensure sufficient supply of coal before increasing the load factor.
Q : One needs to examine many more factors related to power generation.
R : The quality of coal is one of them.
S : When production does not meet demand, people at the mines add shale to coal.