21101
We characterized the effects of the electrophilic arthropod defensive compound para - benzoquinone ( pBQN ) on the human TRPA1 channel .
 Chemical: para - benzoquinone; Chemical: pBQN
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: para - benzoquinone; Chemical: pBQN