1434
These findings suggest that it may be possible to identify a succimer treatment protocol that improves cognitive outcomes in Pb - exposed children .
 Chemical: succimer; Chemical: Pb
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: succimer; Chemical: Pb