11940
BWA is a weapon of choice for mass destruction and terrorism , because of the incubation period , less effective amount than chemical warfare agents , easily distribution , odorless , colorless , difficult to detect , no need of specialized equipment for production and naturally distribution which can easily be obtained .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None