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: Hungary, with a population of about 10 million, lies between Czechoslovakia to the north and Yugoslavia to the south.
P : Here a great deal of grain is grown.
Q : In recent years, however, progress has been made also in the field of industrialisation.
R : Most of this country consists of an extremely fertile plain, through which the river Danube flows.
S : In addition to grain, the plain produces potatoes, sugar, wine and livestock.
S6: The new industries derive mainly from agricultural production.
The Proper sequence should be: