21462
We present structural data mapping the glucose site based on a substituted enzyme ( G794A - beta - galactosidase ) that traps allolactose .
 Chemical: glucose; Chemical: allolactose
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: glucose; Chemical: allolactose