sentences:  Four separate strains were characterised, based mainly on which type of foreign cattle had most influenced the hybrids, and were recognised as breeds in 1944.These were the four wagyū breeds, the Japanese Brown, the Japanese Black, the Japanese Polled and the Japanese Shorthorn.The Japanese Brown developed in southern Japan, in Kōchi Prefecture on Shikoku island, and in Kumamoto Prefecture on Kyushu island.