If the following argument is an instance of one of the "famous" argument forms, name the form and indicate whether the form is valid or invalid; if the argument is NOT an instance of one of the "famous" forms, simply write "unnamed form."
If Sam makes it through Shelob's lair, then Frodo will be saved. If Frodo is saved, then Gollum will lose his precious ring. So, if Sam makes it through Shelob's lair, then Gollum will lose his precious ring.

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The Answer of If the following argument is an instance of one of the "famous" argument forms, name the form and indicate whether the form is valid or invalid; if the argument is NOT an instance of one of the "famous" forms, simply write "unnamed form."
If Sam makes it through Shelob's lair, then Frodo will be saved. If Frodo is saved, then Gollum will lose his precious ring. So, if Sam makes it through Shelob's lair, then Gollum will lose his precious ring.

If the Following Argument Is an Instance of One of the "Famous