13248
The decatungstate anion [ W ( 10 ) O ( 32 ) ] ( 4 - ) is widely used as a photocatalyst in different transformations , during which it undergoes one - electron reduction to [ W ( 10 ) O ( 32 ) ] ( 5 - ) , possibly protonated ; the bi - reduced species [ W ( 10 ) O ( 32 ) ] ( 6 - ) is obtained by ensuing disproportionation .
 Chemical: [ W ( 10 ) O ( 32 ) ] ( 4 - ); Chemical: [ W ( 10 ) O ( 32 ) ] ( 5 - ); Chemical: [ W ( 10 ) O ( 32 ) ] ( 6 - )
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: [ W ( 10 ) O ( 32 ) ] ( 4 - ); Chemical: [ W ( 10 ) O ( 32 ) ] ( 5 - ); Chemical: [ W ( 10 ) O ( 32 ) ] ( 6 - )