Such unintelligent peasants, they didn't even prove that she's a witch!
First they have to know if she's burnable
Which means she is made of wood.
We need to prove that she is made of wood.
Which floats on water.
We need to something that also floats on water.
Which is a duck.
"if she weighs the same as a duck, she's made of wood" which means she's a witch!
Monty Python is great