CREATE TABLE table_59727 ("Name  ( year commissioned ) " CLOB, "Owner/operator" CLOB, "Length" CLOB, "Maximum diameter" CLOB, "From/to" CLOB, "Licence number" CLOB)

Who is the owner/operator of the line from Kambalda to Esperance?
SELECT "Owner/operator" FROM table_59727 WHERE "From/to" = 'kambalda to esperance'
SELECT "Owner/operator" FROM "table_59727" WHERE "From/to" = 'kambalda to esperance'