You are so excited about the upcoming baseball season that you decide to buy tickets for all of three games of the opening series against the Detroit Tigers. All three games are at night, you sit in the same seats, eat and drink the same items $($even during the same innings$),$ and all three games ended with $2-1$ victories over the Detroit Tigers. Even though all of these were the same, this unique characteristic of events still holds true:

Heterogeneity

Intangibility

Inseparability

Perishability