19603
Cobalt speciation in different culture media , in particular soluble and precipitated cobalt species , was investigated via theoretical and analytical approaches .
 Chemical: Cobalt; Chemical: cobalt
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: Cobalt; Chemical: cobalt