14459
In this report , a range of disaccharide or tetrasaccharide fragments of each sequence were chemically synthesized , and their activities in stimulating human Nod2 ( hNod2 ) were investigated .
 Chemical: disaccharide; Chemical: tetrasaccharide
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: disaccharide, tetrasaccharide 
Answer:
 Chemical: disaccharide; Chemical: tetrasaccharide