9397
The sensor measures the decrease in free triiodide ion after it complexes with starch to form a starch - triiodide complex .
 Chemical: triiodide; Chemical: triiodide
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: triiodide; Chemical: triiodide