12173
Consistent with this aim also is a careful scrutiny of instruments and procedures for monitoring the individual response to O ( 2 ) over time .
 Chemical: O ( 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: O ( 2 )