CREATE TABLE table_21753 ("Gatchaman" TEXT, "Battle of the Planets" TEXT, "G-Force" TEXT, "Eagle Riders" TEXT, "OVA  ( Harmony Gold Dub ) " TEXT)

Which battle of the planets where ova (harmony gold dub) is solaris?
SELECT "Battle of the Planets" FROM table_21753 WHERE "OVA (Harmony Gold Dub)" = 'Solaris'
SELECT "Battle of the Planets" FROM "table_21753" WHERE "OVA (Harmony Gold Dub)" = 'Solaris'