Task: Code to Text
Input (English): eq { count { filter_less { filter_less { all_rows ; population ; 60000000 } ; gdp ( billion us ) ; 100 } } ; 2 } = true
Output (English): select the rows whose population record is less than 60000000 . among these rows , select the rows whose gdp  billion us  record is less than 100 . the number of such rows is 2 .