In food processor, puree together parsley leaves, green onions, half of the mint, the cumin, paprika, salt and pepper.
Transfer to large bowl; beat in egg.
Add beef and 2 tbsp water; mix well.
Shape by heaping 2 tbsp into small sausages.
Thread each lengthwise onto metal or soaked wooden skewer.
Place skewers on greased grill over medium heat or under broiler; close lid and grill, turning once, until no longer pink inside and digital rapid-read thermometer inserted into several koftas reads 160F, about 12 minutes on grill, 7 minutes under broiler.
Meanwhile, grill or broil pita breads, turning once, until crisp, about 4 minutes; cut into quarters.
Combine yogurt with remaining mint and minced parsley.