使用上面的示例，如果想只使用羊驼地图生成输出，会发生什么情况呢？
Working with the sample above, what happens when you want to produce output using only the alpaca map?
配方使用羊，小米，苋，大麦和啡米而制成。使生长发育中的幼犬保持整体的健康。
Product Description: Dry food formula made with Lamb, Millet, Amaranth, Barley and Brown Rice. Ideal for growing puppies, to maintain total health.
环境保护主义者已经使用克隆来帮助保护濒危物种，例如穆福隆羊。
Conservationists have used cloning to help protect endangered species such as the mouflon sheep.
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