29061
The crystals of benzene and hexahalogenbenzenes have been studied by means of the density - functional theory augmented by an empirical dispersion correction term as well as by the symmetry - adapted perturbation theory .
 Chemical: benzene; Chemical: hexahalogenbenzenes
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: benzene, hexahalogenbenzenes 
Answer:
 Chemical: benzene; Chemical: hexahalogenbenzenes