Directions: In the following items, each passage consists of six sentences. The first sentence (S1) and the final sentence (S6) are given. The middle four sentences (P, Q, R, S) have been jumbled. Find the proper sequence.

S1: In England, yesterday, villagers were amazed to see a number of youths floating over a field.

S6: The others, however, returned safely to earth by puncturing their umbrellas before they had risen very far.

P: One boy let go his umbrella and landed on a cow from a height of about ten feet.

Q: Luckily, there were not as many casualties as there might have been.

R: Another ended up in a pond.

S: The youths, it appeared, had inflated their fathers' umbrellas with hydrogen and as a result were borne skywards.