Black Bean Salsa

I can corn drained
1 can black beans drained
1 onion coarsely chopped
1 lrg tomato diced
1 bottle of italian dressing (I use zesty fat free)
cilantro chopped and added (I usually use a medium bunch, just so there is nice color throughout)

I used less italian dressing than is listed here.  Just enough to make it moist.