5401
In most catchments , HCO 3 ( - ) and SO 4 ( 2 - ) concentrations were greater than Cl ( - ) concentration .
 Chemical: HCO 3 ( - ); Chemical: SO 4 ( 2 - ); Chemical: Cl ( - )
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: HCO 3 ( - ); Chemical: SO 4 ( 2 - ); Chemical: Cl ( - )