Question: The company Frank Graham Thompson was heir to was established in what year?
Sentence (from "Flying Emus"): They won CMAA Country Music Awards in 1986 (Instrumental of the Year and Vocal Group or Duo of the Year), 1987 (Instrumental of the Year and Vocal Group or Duo of the Year), 1988 (Instrumental of the Year) and 1991 (Instrumental of the Year).
Relevant evidence: No