20837
The combination of spin - canting effects and the collection of gadolinium species within small - sized GdIO nanoparticles led to a significantly enhanced T1 contrast effect .
 Chemical: gadolinium; Chemical: GdIO
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: gadolinium, GdIO 
Answer:
 Chemical: gadolinium; Chemical: GdIO