Authentic Seafood Paella

Name: Authentic Seafood Paella
Ingredients: 2 tablespoons olive oil; 1 onion, finely diced; 0.5 tomato, finely diced; 1 pinch salt; 0.5 tablespoon smoked paprika; 6 fresh romano or green beans; 0.5 cup canned butter beans, drained and rinsed; 0.5 cup white rice; 6 large shrimp; 6 mussels; 6 clams; 1 cup white wine; 2 cups seafood stock; 1 pinch saffron threads; 1 teaspoon finely chopped fresh rosemary; 1 cup fresh peas; 5 baby squid, cut into rings and tentacles; 1 lemon, cut into wedges; 1 tablespoon chopped fresh flat-leaf parsley