Potluck Bean and Rice Salad

I had signed up to bring a side dish to a neighborhood potluck last night, but events conspired against me and it was suddenly an hour before the party and I hadn't figured out what I was bringing--nor did I have time to run to the store. I scanned the pantry, scanned a few cookbooks, and put this together from a few different sources. It came out great!

1 cup cooked rice
1 14 oz can kidney beans, drained and rinsed
1 14 oz can black beans, drained and rinsed
1 14 oz can corn, drained (or a cup or two of frozen corn)
1 red pepper, diced
6 scallions, chopped
1/4 cup olive oil
1/4 cup red wine vinegar
1 tsp dried basil (fresh would be better if you have it!)
salt and pepper to taste

Mix everything up and chill until ready to serve. Great for potlucks and buffets as it can sit out at room temperature.