CREATE TABLE table_39087 ("Election" FLOAT, "Labour" FLOAT, "Conservative" FLOAT, "Liberal" FLOAT, "Social Democratic Party" FLOAT, "Social and Liberal Democrats/ Liberal Democrats" FLOAT, "Independent" FLOAT, "Green" FLOAT, "Other" TEXT, "Control" TEXT)

Which Social and Liberal Democrats/ Liberal Democrats has a Control of labour hold, and a Liberal larger than 0?
SELECT SUM("Social and Liberal Democrats/ Liberal Democrats") FROM table_39087 WHERE "Control" = 'labour hold' AND "Liberal" > '0'
SELECT SUM("Social and Liberal Democrats/ Liberal Democrats") FROM "table_39087" WHERE "Control" = 'labour hold' AND "Liberal" > '0'