16063
However , the high toxicity of Gd ( 3 + ) and potential side effects including nephrogenic systemic fibrosis have led to the search for alternative T ( 1 ) contrast agents .
 Chemical: Gd ( 3 + )
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: Gd ( 3 + ) 
Answer:
 Chemical: Gd ( 3 + )