3469
In addition , a good linear relationship has been established between : the natural logarithm of the BEs and the electrostatic interaction energy between electron charge distribution of N atom and nucleus of Cl atom , denoted as V e - n ( N , Cl ) within the AIM theory .
 Chemical: N; Chemical: Cl; Chemical: N; Chemical: Cl
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: N, Cl, N, Cl 
Answer:
 Chemical: N; Chemical: Cl; Chemical: N; Chemical: Cl