For example, if it's true that it's raining, and it's true that I'm inside, then it's true that it's raining, and I'm inside.
Formally:
A B ∴ ( A ∧ B )
... and his wife Darya (Dolly) caused by the former's unfaithfulness. In Moscow, Anna meets and secures the admiration of Count Vronsky to the jealously of Dolly's sister ...