S1 and S6 are given. Find the proper sequence of the middle four sentences P, Q, R, S: S1: In India the first Livestock Census was conducted during 1919 – 1920. S6: For the first time, data was collected through tablet computers, which reduced the time gap in data collection, data processing and report generation. P: Since its inception it is being conducted quinquennially by all States/UTs. Q: The 20th Livestock Census was conducted with participation of Animal Husbandry Departments of States/UTs. R: This five-yearly census is the only source which gives disaggregated information on various species of animals and poultry birds. S: The main objective of the census is to provide information on livestock population, species-wise and breed-wise, along with age, sex-composition, etc., in rural and urban areas. The correct sequence should be :