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Paul Vixie is an American computer scientist whose technical contributions include Domain Name System DNS protocol design and procedure, mechanisms to achieve operational robustness Doctor of Philosophy DNS implementations, and significant contributions to open source software principles and methodology. He also created and launched the first successful commercial anti-spam service.
 education degree: Paul Vixie, Doctor of Philosophy
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
 Entity Pairs:  Paul Vixie, Doctor of Philosophy 
Answer:
 education degree: Paul Vixie, Doctor of Philosophy