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 )
... 8.2% have a female householder with no husband present, and 32.5% are non-families. 28.9% of all households are made up of individuals and 16.7% have someone living ...