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These results allow us to establish that , when the halogen atom is bonded to a group with high electron - withdrawing capacity , the electrostatic interaction between the electron cloud of the Lewis base and the halogen atom unprotected nucleus of the Lewis acid produces the formation and determines the geometry of the halogen bonded complexes .
 Chemical: halogen; Chemical: Lewis base; Chemical: halogen; Chemical: Lewis acid; 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, Lewis base, halogen, Lewis acid, halogen 
Answer:
 Chemical: halogen; Chemical: Lewis base; Chemical: halogen; Chemical: Lewis acid; Chemical: halogen