20261
Cases involving approximately 120 species met the selection criteria , and a small subset designated Hazard Level 1 ( most hazardous ) , contained 5 species with lethal potential .
 None
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:  
Answer:
 None