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 5,011 families residing in the town. The population density is 1,549.2/km² (4,010.1/mi²). There are 6,949 housing units at an average density of ...