The following six sentences come from a paragraph. The first and the last sentences are given. Choose the order in which the four sentences (PQRS) should appear to complete the paragraph.
S1 : It was Saturday.
S6 : The children had already bought roasted gram and peanuts to get into a picnic mood.
P : A taxi carted us all to the zoo.
Q : They wanted to be taken out and we decided to take them to the local zoo.
R : My sister's two young children were at our house.
S : We bought the tickets and entered the zoo.
Select the correct sequence.