20247
Moreover , we were able to localize the ( 157 ) Gd ( 3 + ) ions along the surface normal with nanometer precision .
 Chemical: ( 157 ) Gd ( 3 + )
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: ( 157 ) Gd ( 3 + )