25517
The trisulfur radical anion [ S3 ] . ( - ) is well - known from inorganic chemistry textbooks as the blue chromophore in ultramarine blues in which this highly reactive species is trapped in a zeolitic framework .
 Chemical: trisulfur; Chemical: [ S3 ] . ( - )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: trisulfur; Chemical: [ S3 ] . ( - )