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_51432 ( "Athlete" text, "Event" text, "Round of 32" text, "Round of 16" text, "Quarterfinal" text, "Semifinal" text, "Final" text )

### Question ###
For the light heavyweight 81 kg event that did not advance to semifinal, who was the athlete?

### Accurate SQL ###

SELECT "Athlete" FROM table_51432 WHERE "Semifinal" = 'did not advance' AND "Event" = 'light heavyweight –81 kg'