CREATE TABLE table_39208 ("Isotope" CLOB, "Half-life" CLOB, "Decay mode" CLOB, "Discovery year" CLOB, "Reaction" CLOB)

What is the decay mode of the 265m hs isotope discovered in 1984?
SELECT "Decay mode" FROM table_39208 WHERE "Discovery year" = '1984' AND "Isotope" = '265m hs'
SELECT "Decay mode" FROM "table_39208" WHERE "Discovery year" = '1984' AND "Isotope" = '265m hs'