5899
The authors developed an aquatic life benchmark for specific conductance as a measure of ionic strength that is expected to prevent the local extirpation of 95 % of species from neutral to alkaline waters containing a mixture of dissolved ions in which the mass of SO ( 4 ) 2 - + HCO ( 3 ) - >= Cl ( - ) .
 SO ( 4 ) 2 -, HCO ( 3 ) -, Cl ( - )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 SO ( 4 ) 2 -, HCO ( 3 ) -, Cl ( - )