Black Bean Salsa

from Dawn at SWIB

16oz black beans (preferably with cumin and chili spices)
16oz corn (preferably frozen)
1/2 C chopped cilantro
1/4 C chopped red onion
1/4 C chopped green onion
1/3 C lime juice
3 Tbsp olive oil
1 Tbsp ground cumin
salt and pepper to taste
1/2 C chopped tomatoes, drained

Combine all ingredients except tomatoes. Chill 2 hours. Add tomatoes before serving.