8456
Non - ionic Gd - based MRI contrast agents are optimal for encapsulation into phosphatidyldiglycerol - based thermosensitive liposomes .
 Chemical: Gd; Chemical: phosphatidyldiglycerol
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: Gd; Chemical: phosphatidyldiglycerol