15341
Here we report that systemic administration of the non - imidazole histamine H3 receptor antagonist 4 - ( 2 - { 2 - [ ( 2R ) - 2 - methylpyrrolidinyl ] ethyl } - benzofuran - 5 - yl ) benzonitrile ( ABT - 239 , 3 mg / kg ) increased c - Fos expression dose - dependently in rat cortex and nucleus basalis magnocellularis ( NBM ) but not in the nucleus accumbens ( NAcc ) nor striatum , and augmented acetylcholine and histamine release from rat prefrontal cortex .
 Chemical: histamine; Chemical: 4 - ( 2 - { 2 - [ ( 2R ) - 2 - methylpyrrolidinyl ] ethyl } - benzofuran - 5 - yl ) benzonitrile; Chemical: ABT - 239; Chemical: acetylcholine; Chemical: histamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: histamine, 4 - ( 2 - { 2 - [ ( 2R ) - 2 - methylpyrrolidinyl ] ethyl } - benzofuran - 5 - yl ) benzonitrile, ABT - 239, acetylcholine, histamine 
Answer:
 Chemical: histamine; Chemical: 4 - ( 2 - { 2 - [ ( 2R ) - 2 - methylpyrrolidinyl ] ethyl } - benzofuran - 5 - yl ) benzonitrile; Chemical: ABT - 239; Chemical: acetylcholine; Chemical: histamine