Baked sweet potatoes

Name: Baked sweet potatoes
Ingredients: 2 medium sweet potato , (350g each); olive oil; ½ a lemon; 80 g fat-free natural yoghurt; 1 small pinch of turmeric; 1 small pinch of ground cumin; 1 carrot; 6 radishes; 1 raw beetroot; 1 small red onion; 1 eating apple; extra virgin olive oil; 2 tablespoons pumpkin and sunflower seeds; maple syrup , (optional); 35g rocket