In each question, the first and the last sentences of the passage are numbered S1 and S6 respectively. The rest of the passage is split into four parts. These four sentences are jumbled. Read the sentences and identify their correct and logical order.

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S1: This weather-vane often tops a church spire, tower or high building.
P : They are only wind-vanes.
Q : Neither alone can tell us what the weather will be.
R : They are designed to point to direction from which the wind is coming.
S : Just as the barometer only tells us the pressure of air, the weather-vane tells us the direction of wind.
S6: The weather-vane can, however give us some indication of other.
The Proper sequence should be: