5953
The high - frequency reorientation dynamics of O - ( 2 ) H bonds is investigated in various amorphous ices including eHDA ( expanded high density amorphous ice ) , LDA - II ( low density amorphous ice II ) and HGW ( hyperquenched glassy water ) using ( 2 ) H - NMR spin - lattice relaxation as a local probe .
 Chemical: O - ( 2 ) H; Chemical: ( 2 ) H
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 ) H; Chemical: ( 2 ) H