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_16998 ( "Season" real, "Position" real, "Win/Loss" text, "Coach" text, "Captain" text, "Dudley Tuckey Medal" text, "Leading goalkicker" text )

### Question ###
what is the total number of coach where captain is grant welsh and win/loss is 5-15

### Accurate SQL ###

SELECT COUNT("Coach") FROM table_16998 WHERE "Captain" = 'Grant Welsh' AND "Win/Loss" = '5-15'