Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28721 ( "Monarch" text, "Heir" text, "Status" text, "Relationship to Monarch" text, "Became heir
TABLE: reason" text, "Ceased to be heir
TABLE: reason" text, "Next in succession" text )

### Question ###
How many times was the monarch singu?

### Accurate SQL ###

SELECT COUNT("Relationship to Monarch") FROM table_28721 WHERE "Monarch" = 'Singu'