Complex sentence: The Aria and Gibson Epiphone Japan partnership ended in 1983 with the export Epiphone production moving to Korea and in 1987 Yamano Gakki obtained the Gibson and Epiphone dealership in Japan.
Split into simpler sentences: The Aria and Gibson Epiphone Japan partnership ended in 1983 with the production of Epiphone guitars for export being moved to Korea. In 1987 Yamano Gakki obtained the Gibson and Epiphone dealership in Japan.