473
Buck was born at ``Buena Vista'' near New Castle, Delaware, son of Frances N. and Margaret C. Douglass Buck Buck. His father was from Philadelphia and his mother was descended from U.S. Senator John M. Clayton. He married Alice du Pont, daughter of U.S. Senator T. Coleman du Pont, and they had two children, Clayton Douglass, Jr. and Mrs. Dorcas Van Dyke Farquhar. They were members of Immanuel Episcopal Church in New Castle. He was educated at the Wilmington Friends School and the University of Pennsylvania Engineering School, serving some in the U.S. Army during World War I.
 education institution: C. Douglass Buck, Wilmington Friends School
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 education institution: C. Douglass Buck, Wilmington Friends School