9058
H ( 2 ) O ( 2 ) and H ( 2 ) O were observed in the gas phase as products of the OH reaction with ATD surface with yields of ( 10 +/- 3 ) and ( 98 +/- 25 ) % , respectively .
 H ( 2 ) O ( 2 ), H ( 2 ) O, OH
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 H ( 2 ) O ( 2 ), H ( 2 ) O, OH