Table: burmese_heirs
Columns: monarch
heir
status
relationship_to_monarch
became_heir_reason
ceased_to_be_heir_reason
next_in_succession

Question: Who was the heir when the monarch was Wareru?
SQL: SELECT "heir" FROM burmese_heirs WHERE "monarch" = 'Wareru'

Question: What is the number of monarchs that had Yan Maw la Mon as the heir?
SQL: SELECT COUNT("monarch") FROM burmese_heirs WHERE "heir" = 'Yan Maw La Mon'

Question: Who was the monarch whose status was heir presumptive and a relationship to the monarch of son?
SQL: SELECT "monarch" FROM burmese_heirs WHERE "status" = 'Heir presumptive' AND "relationship_to_monarch" = 'son'