In the star wars example if he were to expand and add this "and due to the Star Wars movie being very popular there will be plenty of opportunities to see it". Would this still make the "Even though the Star Wars movie is popular" a concession or now is it context for the premise being added?

Can I not make the domain "Ms Stoops' Class" and then that would make the arrow multi-directional?

#Help

I understand how you get to the conclusion but why is it silent on what happens if the animal serves a leg purpose?

For example:

/Animal does serve leg pur & Resident -> Prohibited

Can I not contrapositive this to:

/Prohibited -> Animal does serve leg pur or /Resident

Or does this mean that it is still silent on what happens when an animal does serve a leg purpose and we only know what happens when they are /prohibited? Sorry, I'm confused.

Could you also say its not all the cats trained by parisian divas, only the fat ones sing lullabies, so we have no knowledge on tall cats trained by parisian divas. The diagram makes it seem like fat cats are the necessity, and the parisian divas are sufficient, I think those words fit here. But i'm just wondering if you can reverse it as well.