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_204_54 ( id number, "pondicherry assembly" text, "duration" text, "name of m.l.a." text, "party affiliation" text, "election year" number )

### Question ###
who served after v. vaithilingam ?

### Accurate SQL ###

SELECT "name of m.l.a." FROM table_204_54 WHERE "duration" > (SELECT "duration" FROM table_204_54 WHERE "name of m.l.a." = 'v. vaithilingam' ORDER BY "duration" DESC LIMIT 1) ORDER BY "duration" LIMIT 1