CREATE TABLE table_name_35 (company VARCHAR2, country VARCHAR2, business VARCHAR2, date VARCHAR2)

In the United Kingdom, what company has an unknown date and is an energy business?
SELECT company FROM table_name_35 WHERE business = "energy" AND date = "unknown" AND country = "united kingdom"
SELECT "company" FROM "table_name_35" WHERE "business" = "energy" AND "country" = "united kingdom" AND "date" = "unknown"