Classic Three Bean Salad

Ingredients

• 1 lb Green beans
• 1 (15 oz) can Canned white beans
• 1 (15 oz) can Kidney beans
• 1/2 cup Celery
• 1/2 cup Red onion
• 2 tbsp. Flat-leaf parsley
• 1/3 cup Olive oil
• 1/4 cup Red wine vinegar
• 1 Lemon
• 1 1/2 tsp. Salt
• 1/2 tsp. Black pepper