12042
In medicine , the use of silica nanoparticles ( SiO ( 2 ) NPs ) offers new perspectives in biosensor , drug delivery and cancer therapy .
 Chemical: silica; Chemical: SiO ( 2 )
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: silica; Chemical: SiO ( 2 )