4288
We investigated a combination of [ + ] - Hup A with a small dose of [ - ] - Hup A ( [ + ] and [ - ] - Hup A ) against soman toxicity .
 Chemical: [ + ] - Hup A; Chemical: [ - ] - Hup A; Chemical: [ + ] and [ - ] - Hup A; Chemical: soman
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: [ + ] - Hup A; Chemical: [ - ] - Hup A; Chemical: [ + ] and [ - ] - Hup A; Chemical: soman