Task: Question Generation
Input (English): Context : Panair do Brasil began operations on October 22, 1929, as NYRBA do Brasil S.A., a Brazilian subsidiary of NYRBA, Inc. (New York, Rio, and Buenos Aires Line), forerunner of Pan American. 
Subject : Panair do Brasil 
Relation : parent company
Output (English): What is Panair do Brasil's parent company?