8137
Here we report the functionalization of monodisperse iron oxide nanoparticles ( NPs ) with commercially available functional acids containing multiple double bonds such as linolenic ( LLA ) and linoleic ( LEA ) acids or pyridine moieties such as 6 - methylpyridine - 2 - carboxylic acid , isonicotinic acid , 3 - hydroxypicolinic acid , and 6 - ( 1 - piperidinyl ) pyridine - 3 - carboxlic acid ( PPCA ) .
 Chemical: iron oxide; Chemical: linolenic ( LLA ) and linoleic ( LEA ) acids; Chemical: pyridine; Chemical: 6 - methylpyridine - 2 - carboxylic acid; Chemical: isonicotinic acid; Chemical: 3 - hydroxypicolinic acid; Chemical: 6 - ( 1 - piperidinyl ) pyridine - 3 - carboxlic acid; Chemical: PPCA
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: iron oxide; Chemical: linolenic ( LLA ) and linoleic ( LEA ) acids; Chemical: pyridine; Chemical: 6 - methylpyridine - 2 - carboxylic acid; Chemical: isonicotinic acid; Chemical: 3 - hydroxypicolinic acid; Chemical: 6 - ( 1 - piperidinyl ) pyridine - 3 - carboxlic acid; Chemical: PPCA