Boring Law of Syllogism

Halloween is coming soon and witches are very popular these days so, here is an epic scene about witches!(I bet you all know it)

The question is: What makes you think she is a witch?

and here it comes, Monty Pythons’ law of Syllogism(which I think it isn’t very correct but it is fun and hilarious):

If p —> q and q —> r are true statements, then p —> r is a true statement.

Sir Bedevere:There are ways of telling whether she is a witch.Peasant 1 : Are there? Oh well, tell us.Sir Bedevere: Tell me. What do you do with witches? Peasant 1: Burn them.Sir Bedevere: And what do you burn, apart from witches?Peasant 1: More witches.
Peasant 2: Wood.
Sir Bedevere: Good. Now, why do witches burn?
Peasant 3: …because they’re made of… wood?
Sir Bedevere: Good. So how do you tell whether she is made of wood?
Peasant 1: Build a bridge out of her.
Sir Bedevere: But can you not also build bridges out of stone?
Peasant 1: Oh yeah.
Sir Bedevere: Does wood sink in water?
Peasant 1: No, no, it floats!… It floats! Throw her into the pond!
Sir Bedevere: No, no. What else floats in water?
Peasant 1: Bread.
Peasant 2: Apples.
Peasant 3: Very small rocks.
Peasant 1: Cider.
Peasant 2: Gravy.
Peasant 3: Cherries.Peasant 1: Mud.
Peasant 2: Churches.
Peasant 3: Lead! Lead!
King Arthur: A Duck.
Sir Bedevere: …Exactly. So, logically…
Peasant 1: If she weighed the same as a duck… she’s made of wood.
Sir Bedevere: And therefore…
Peasant 2: …A witch!A syllogism (Greek: συλλογισμός – syllogismos – “conclusion,” “inference”) is a kind of logical argument in which one proposition (the conclusion) is inferred from two or more others (the premises) of a certain form. In antiquity, there were two rival theories of the syllogism: Aristotelian syllogistic and Stoic syllogistic (www.wikipedia.org)