13778
The P = O group of DMMP interacts predominantly with H ( 2 ) O and gives no clear indication of bonding to the oxide surface itself , from which it is inferred that the displacement of weakly adsorbed H ( 2 ) O results from the interaction of acidic Al - OH sites with the methoxy O atoms of DMMP .
 Chemical: P = O; Chemical: DMMP; Chemical: H ( 2 ) O; Chemical: oxide; Chemical: H ( 2 ) O; Chemical: Al - OH; Chemical: methoxy; Chemical: O; Chemical: DMMP
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: P = O, DMMP, H ( 2 ) O, oxide, H ( 2 ) O, Al - OH, methoxy, O, DMMP 
Answer:
 Chemical: P = O; Chemical: DMMP; Chemical: H ( 2 ) O; Chemical: oxide; Chemical: H ( 2 ) O; Chemical: Al - OH; Chemical: methoxy; Chemical: O; Chemical: DMMP