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 "Adelaide Steamship Company"): For the first 100 years of its life, the main activities of the company were conventional shipping operations on the Australian coast, primary products, consumer cargoes and extensive passenger services.
Relevant evidence: No