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The IL - 8 receptor is a seven - transmembrane spanning receptor coupled to specific heterotrimeric G proteins including Gi and G16 .
 GENE: IL - 8 receptor; GENE: heterotrimeric G proteins; GENE: Gi; GENE: G16
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: IL - 8 receptor, heterotrimeric G proteins, Gi, G16 
Answer:
 GENE: IL - 8 receptor; GENE: heterotrimeric G proteins; GENE: Gi; GENE: G16