Question: What is the date of death of Bertha Puga Martínez's husband?
Sentence (from "Alberto Lleras Camargo"): Alberto Lleras Camargo (3 July 1906 – 4 January 1990) was the 20th President of Colombia (1958–1962), and the 1st Secretary General of the Organization of American States (1948–1954).
Relevant evidence: Yes