497
Thus , d - delta3 - carene was about four times more potent as a sensory irritant than I - beta - pinene , whereas the difference with I - alpha - pinene was more marked ; as a sensory irritant , I - alpha - pinene is almost inactive .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None