Question: John Spalvins, born Janis Gunnars Spalvins, in 1936, in Latvia, was Managing Director of the Adelaide Steamship Company from 1977 until the company's collapse in 1991, it was formed by a group of South Australian businessmen in which year?
Sentence (from "John Spalvins"): During this period under Spalvins' control, "AdSteam" became Australia's major corporate entity with interests and significant holdings in retailing, food, wine, dairy, hardware, building, banks, and numerous other companies.
Relevant evidence: No