element name is missing 

In the generated VASP POSCAR, elements name are missing. For example:
"#POSCAR written by GB_code
1 
19.97084000 0.0 0.0
0.0 22.32807790 0.0
0.0 0.0 22.32807790
120 120
Cartesian"

Here how do we know that 120 atoms correspond to which elements ?