Black Bean & Corn Salad

2 cups black beans, drained
16 oz. can corn, drained
6 tablespoons fresh lime juice
(or juice of one lime)
5 tablespoons vegetable oil
(or olive oil)
1/4 cup red onion, minced
1/4 cup scallions, minced
1/8 cup parsley, minced
( or cilantro )
1 1/2 teaspoons cumin
1/2 cup chopped tomatoes
salt
pepper

Mix all ingredients, 
except tomatoes, together.
Add salt and pepper, to taste.
Cover and chill.
Shortly before serving,
toss in tomatoes.
This can be made a day ahead
of time.