15978
The highest bioaccessibility was observed for As , Cu , Ni and Se , and the lowest for Fe , Co and Pb .
 Chemical: As; Chemical: Cu; Chemical: Ni; Chemical: Se; Chemical: Fe; Chemical: Co; 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: As; Chemical: Cu; Chemical: Ni; Chemical: Se; Chemical: Fe; Chemical: Co; Chemical: Pb