Does ''  The principal parent of Yiddish is High German, the form of German encountered by Jewish settlers from northern France in the eleventh century.' neither support nor refute 'The principal parent of Yiddish is Eastern Slavic.', instead existing independently?
'  The principal parent of Yiddish is High German, the form of German encountered by Jewish settlers from northern France in the eleventh century.###The principal parent of Yiddish is Eastern Slavic.