user: Question: Who was the monarch whose status was Heir presumptive and a relationship to the monarch of son?
Columns: ['Monarch', 'Heir', 'Status', 'Relationship to Monarch', 'Became heir; reason', 'Ceased to be heir; reason', 'Next in succession']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Wareru', 'Hkun Law', 'Heir presumptive', 'brother', 'December 1287 brother founded dynasty', 'January 1307 succeeded', 'Yan Maw La Mon 1307, brother']
SQL:

assistant: SELECT "Monarch" FROM "Table" WHERE "Status" = 'Heir presumptive' AND "Relationship to Monarch" = 'son';