4719
How is ( 68 ) Ga labeling of macrocyclic chelators influenced by metal ion contaminants in ( 68 ) Ge / ( 68 ) Ga generator eluates ?
 Chemical: ( 68 ) Ga; Chemical: ( 68 ) Ge; Chemical: ( 68 ) Ga
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: ( 68 ) Ga; Chemical: ( 68 ) Ge; Chemical: ( 68 ) Ga