1870
Nicotine alone had no or only minimal cytotoxicity for all cell types in the applied range .
 Chemical: Nicotine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Nicotine 
Answer:
 Chemical: Nicotine