14765
X - ray photoelectron spectroscopy characterization indicates that the Cu oxides formed at 200 degrees C and 300 degrees C are Cu ( 2 ) O and CuO , respectively .
 Chemical: Cu oxides; Chemical: Cu ( 2 ) O; Chemical: CuO
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: Cu oxides; Chemical: Cu ( 2 ) O; Chemical: CuO