Original: After Nestorianism, taught by Nestorius, Archbishop of Constantinople, was rejected at the First Council of Ephesus, Eutyches, an archimandrite at Constantinople, emerged with diametrically opposite views.
Simplified: After Nestorianism, taught by Nestorius, Archbishop of Constantinople, was refused at the First Council of Ephesus, Eutyches, an archimandrite at Constantinople came up with new views.