7069
Compared with A . ilicifolius , less Pb accumulated in leaves of K . obovata , which indicates that this species is a typical Pb - excluder .
 Chemical: Pb; Chemical: Pb
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: Pb; Chemical: Pb