In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct

1. The master returned home after sometime.

P. The snake was lying dead under the cradle.

Q. He went into the room where the baby was sleeping.

R. It had been killed by his dog.

S. He noticed a snake.

6. He realised that his dog had saved his baby.