CREATE TABLE table_52856 ("Station Number" CLOB, "District" CLOB, "Location" CLOB, "Type" CLOB, "Appliances" CLOB, "Registrations" CLOB)

What is the registration of the station at Cambridge?
SELECT "Registrations" FROM table_52856 WHERE "District" = 'cambridge'
SELECT "Registrations" FROM "table_52856" WHERE "District" = 'cambridge'