11217
The authors calculations suggest that ( 1 ) contaminated soils and sediments account for > 80 % of the annual mercury export from the entire watershed , with most export occurring during wet weather events ; ( 2 ) bank erosion and resuspension of streambed particulates are the major mercury sources maintaining high annual mercury export rates ; and ( 3 ) the inventory of particle - associated mercury in the streambed was not large enough to sustain the estimated export rates for more than a few years .
 Chemical: mercury; Chemical: mercury; Chemical: mercury; Chemical: mercury
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: mercury; Chemical: mercury; Chemical: mercury; Chemical: mercury