Mediterranean lentil salad

1 cup of cooked lentils
4 tbsps of boiled bulgur
1 small size tomato
1 spring onion
1/2 red bell pepper
2 small pickled cucumbers
a handful of parsley
1 tbsp of mustard
salt
pepper
1 tbsp of crushed linseed
1-2 tbsps of balsamic vinegar
olive oil
1 handful of walnuts