9069
In recent years , the discovery of green fluorescent protein ( GFP ) by Roger Y. Tsien and others , hybrid systems and quantum dots have enabled assessing protein location and function more precisely .
 person: Roger Y. Tsien
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Roger Y. Tsien 
Answer:
 person: Roger Y. Tsien