Bow-Tie Pasta Salad

Ingredients

• 1 cup cooked bow-tie pasta
• 1 tomato, diced
• 1/4 cup diced celery
• 1/4 cup diced green onion
• 1/4 cup thinly sliced scallions
• 1 tablespoon red wine vinegar
• 1 tablespoon salad oil
• 1/8 teaspoon salt
• 1/4 teaspoon pepper