19857
The heterodimeric hypoxia inducible factor - 1 ( HIF - 1 ) complex is composed of the hypoxia inducible factor - 1 alpha ( HIF - 1 alpha ) and the aryl hydrocarbon receptor nuclear translocator ( ARNT ) .
 Chemical: aryl hydrocarbon
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: aryl hydrocarbon