16069
The 58 - congener mixture contained relative proportions of primary congeners measured in belted sandpiper ( Megaceryle alcyon ) and spotted sandpiper ( Actitis macularia ) eggs collected along the upper Hudson River , New York , USA , and chicken doses were well below observed environmental exposure levels .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None