Question: What is the date of death of Bertha Puga Martínez's husband?
Sentence (from "Bertha Puga Martínez"): Bertha Puga Martínez (13 March 1909 – 9 August 2007) was the wife of the 20th President of Colombia, Alberto Lleras Camargo, and served as First Lady of Colombia from 1958 to 1962.
Relevant evidence: Yes