11595
The interactions can be understood in terms of electrostatics / polarization and dispersion ; they involve a region of positive electrostatic potential on a covalently bonded halogen and a negative site , such as the lone pair of a Lewis base .
 Chemical: halogen
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: halogen 
Answer:
 Chemical: halogen