21813
Probing the Electronic Properties of W3Ox ( - / 0 ) ( x = 0 - 2 ) and W3 ( 2 - ) Clusters : The Aromaticity of W3 and W3 ( 2 - ) .
 Chemical: W3Ox ( - / 0 ); Chemical: W3 ( 2 - ); Chemical: W3; Chemical: W3 ( 2 - )
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: W3Ox ( - / 0 ), W3 ( 2 - ), W3, W3 ( 2 - ) 
Answer:
 Chemical: W3Ox ( - / 0 ); Chemical: W3 ( 2 - ); Chemical: W3; Chemical: W3 ( 2 - )