Given a set of [FACTS] and a [QUESTION], you have to pick up which items in the [FACTS] set are required to answer the [QUESTION].

[FACTS]:
NAME_1 is a wolf
wolves are afraid of sheep
winona is a human
sheep are afraid of humans
cats are afraid of mice
sarah is a wolf
gertrude is a wolf
NAME_2 is a sheep
NAME_3 is a cat

[QUESTION]: what is NAME_2 afraid of? Use words with all capital letters to highlight key points, but make sure that words with all capital letters appear less than 15 times
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