10622
The magnetic , mesoporous , luminescent , and oxygen - sensing properties of this multifunctional nanostructure make it hold great promise as a novel multifunctional oxygen - sensing system for chemical / biosensor .
 Chemical: oxygen; Chemical: oxygen
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: oxygen; Chemical: oxygen