Question: What is the Population 1961 of west sussex with a Population of 120952 or less?
SQL: SELECT SUM("Population 1961") FROM "2-18581415-1" WHERE "Administrative County" = 'west sussex' AND "Population 1891" < 120952.0;

Question: What is the Population n1891 of the County with Sleaford Headquarters?
SQL: SELECT MAX("Population 1891") FROM "2-18581415-1" WHERE "Headquarters" = 'Sleaford';