5319
Delta ( 9 ) - tetrahydrocannabinol ( Delta ( 9 ) - THC ) has potent immune modulatory properties and can impair pathogen - induced immune defenses , which in part have been attributed to ligation of the cannabinoid receptors 1 ( CB ( 1 ) ) and 2 ( CB ( 2 ) ) .
 Chemical: Delta ( 9 ) - tetrahydrocannabinol; Chemical: Delta ( 9 ) - THC
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: Delta ( 9 ) - tetrahydrocannabinol; Chemical: Delta ( 9 ) - THC