1430
RESULTS : Pb exposure produced lasting impairments in learning , attention , inhibitory control , and arousal regulation , paralleling the areas of dysfunction seen in Pb - exposed children .
 Chemical: Pb; Disease: impairments in learning , attention , inhibitory control , and arousal regulation; 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: Pb; Disease: impairments in learning , attention , inhibitory control , and arousal regulation; Chemical: Pb