Rate the similarity of the following two sentences
A person is frying meat in a pan.
A person is holding a skunk.

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Doctors have speculated that the body's own estrogen protects against cell damage and improves blood flow.
Their belief was based on speculation that estrogen prevents cell damage and improves blood flow.

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Revenue rose 3.9 percent, to $1.63 billion from $1.57 billion.
The McLean, Virginia-based company said newspaper revenue increased 5 percent to $1.46 billion.
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