Question: Who served as both the Prime minister and Foreign minister in the 1980's to the sovereign country consisting of six major islands and over 900 smaller islands in Oceania?
Sentence (from "Solomon Islands"): Solomon Islands is a sovereign country consisting of six major islands and over 900 smaller islands in Oceania lying to the east of Papua New Guinea and northwest of Vanuatu and covering a land area of 28400 km2 .
Relevant evidence: Yes