بعض الحيوان فرس، وكل فرس صهال
Some animals are horses, and every horse neighs.
بعض الحيوان صهال
Some animals neigh.
The minor does not say that every animal is a horse; it identifies only some animals as horses. The major applies neighing to all horses. Hence neighing is established for some animals, not every animal, and the conclusion is particular affirmative.