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_50613 ( "Athlete" text, "Time" text, "Country" text, "Year" real, "Place" real )

### Question ###
Which Athlete has a Place of 1, and a Year smaller than 1988, and a Country of gre, and a Time of 21:57:00?

### Accurate SQL ###

SELECT "Athlete" FROM table_50613 WHERE "Place" = '1' AND "Year" < '1988' AND "Country" = 'gre' AND "Time" = '21:57:00'