Markdown Pastebin

<Thought>

Alright, I need to determine how many sisters Alice's brother has based on the information provided: Alice has 4 sisters and a brother.

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First, let's break down the relationships:

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1. **Alice** has:

   - 4 sisters

   - 1 brother

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2. The **brother** mentioned is related to Alice, so he is either Alice's only brother or there might be more brothers not specified in the question.

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The key point here is that the brother shares the same parents as Alice does. Since Alice has 4 sisters and 1 brother, it implies that:

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- **Alice** is one of the siblings with 5 total children (4 sisters + 1 brother).

- The **brother** in question is also part of this group of 5 siblings.

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Now, focusing on the brother's perspective:

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- The brother has:

  - 1 sister (Alice)

  - 4 other siblings who are his brothers or sisters.

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However, the term "sisters" in this context refers to female siblings. Since Alice is one of the sisters and there are no indications of additional sisters beyond the 4 mentioned, we can infer that:

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- The brother has **no sisters** because all other siblings are either brothers or not specified as sisters.

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But wait, let's double-check to ensure there's no oversight:

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- If Alice has 4 sisters and 1 brother, then:

  - Total siblings = 5

  - Number of sisters excluding Alice = 3 (since Alice is one sister)

  - Therefore, the remaining 2 are either brothers or not specified as sisters.

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Given that the question specifically asks about "sisters," and we've accounted for all 4 sisters including Alice, it's logical to conclude:

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- The brother does not have any sisters because all other siblings are either his brothers or not categorized as sisters.

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Alternatively, if there were more information suggesting additional female siblings beyond the 4 mentioned, that would change the count. But based on the current data:

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- **Conclusion:** Alice's brother has **0 sisters**.

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</Thought>

<Output>

Alice's brother has 0 sisters.

</Output>