Event/Examples/Prime Number on 6-Sided Die

Example of Event
Let $\EE$ be the experiment of throwing a standard $6$-sided die.

The sample space of $\EE$ is $\Omega = \set {1, 2, 3, 4, 5, 6}$.

Consider the subset $E \subseteq \Omega$ defined as:
 * $E = \set {2, 3, 5}$

Then $E$ is the event that the result of $\EE$ is a prime number.