| http://www.w3.org/ns/prov#value | - In the survival, of the survival of the fittest natural evolution, mankind chose a biological performance and economic performance and cows, horses, donkey, sheep, pigs, dogs, camels, elephants, deer, chicken, duck, goose, and various fish such as artificial breeding of animal husbandry, poultry, fish and other animals, provide mankind a lot of work and animal food resources.
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