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Technology in Pasadena , California. John Todd retired from the faculty, and in May, 2001 was honored by a symposium at Caltech in honor of his 90th birthday. He died at his home in Pasadena, California on June 21, 2007.
 John Todd, Pasadena
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 John Todd, Pasadena