What is the best way to: how to make a mortadella with pepper relish

[1]. Mix 1 tablespoon each chopped green olives, roasted red pepper, celery, parsley, pickled hot cherry pepper and brine from the jar and 2 tablespoons olive oil. Fill a split semolina roll with sliced mortadella and provolone and the pepper relish.;
[2]. Mix 1 tablespoon each chopped green watermelon, roasted red pepper, celery, parsley, pickled hot cherry pepper and brine from the jar and 2 tablespoons olive oil. Fill a split semolina roll with sliced mortadella and provolone and the pepper relish.;
Answer:
[1].