Task: Code to Text
Input (English): eq { count { filter_less { filter_greater { all_rows ; population ; 50000 } ; altitude ( mslm ) ; 300 } } ; 2 } = true
Output (English): select the rows whose population record is greater than 50000 . among these rows , select the rows whose altitude  mslm  record is less than 300 . the number of such rows is 2 .