What are the Koch's postulates for pathogenic diseases?

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Assertion : Pork should be properly cooked to avoid Taenia infection.

Reason : Pork of pig contains Hexacanth and cysticerci larvae.