CREATE TABLE table_28716 ("Monarch" CLOB, "Heir" CLOB, "Status" CLOB, "Relationship to Monarch" CLOB, "Became heir; reason" CLOB, "Ceased to be heir; reason" CLOB, "Next in succession" CLOB)

Who was the monarch whose status was heir presumptive and a relationship to the monarch of son?
SELECT "Monarch" FROM table_28716 WHERE "Status" = 'Heir presumptive' AND "Relationship to Monarch" = 'son'
SELECT "Monarch" FROM "table_28716" WHERE "Relationship to Monarch" = 'son' AND "Status" = 'Heir presumptive'