1260
At the time of his death from pneumonia in Denton County / Frisco city , Texas, he was chairman and CEO of Central Lighting Co.based in Irvine, CA, Chairman of the Board of American Homestar Corp. in Houston, Texas and Chairman of the Board of Starpower Home Entertainment Stores of Dallas, TX. He is survived by his widow Patti Nathan Morton and four sons, Jason, Ryan, Logan, and Chase, stepdaughter, Amy Richardson and step-grandson, Grant Richardson. Big-box store is a term of art in the retail trade that refers to a style of retail store, and by extension to the company behind the store. The terms superstore, megastore, and supercenter also refer to these retail establishments.
 place of death: Nathan Morton, Denton County / Frisco city
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:
 place of death: Nathan Morton, Denton County / Frisco city