19948
This methodology results in an approach that is approximately 74 % sensitive in detecting chemicals in the training set known to alter neuronal function ( 23 expected positives ) while being 100 % specific in detecting chemicals expected to have no effect ( 7 expected negatives ) .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None