6016
Although the solutions containing H ( 2 ) CO ( 3 ) , Cl ( - ) , ClO ( 4 ) ( - ) , NO ( 3 ) ( - ) and SO ( 4 ) ( 2 - ) ions did not have a significant effect on the decolouration , the H ( 2 ) PO ( 4 ) ( - ) ion did decrease the decolouration rate .
 Chemical: H ( 2 ) CO ( 3 ); Chemical: Cl ( - ); Chemical: ClO ( 4 ) ( - ); Chemical: NO ( 3 ) ( - ); Chemical: SO ( 4 ) ( 2 - ); Chemical: H ( 2 ) PO ( 4 ) ( - )
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: H ( 2 ) CO ( 3 ); Chemical: Cl ( - ); Chemical: ClO ( 4 ) ( - ); Chemical: NO ( 3 ) ( - ); Chemical: SO ( 4 ) ( 2 - ); Chemical: H ( 2 ) PO ( 4 ) ( - )