Original sentence: Scientology is also, according to a number of religious scholars, characterized as a form of gnosticism, which would make it hard to reconcile with Roman Catholicism and other denominations that regard gnosticism as a heresy
Edited sentence: Scientology is also, according to a number of religious scholars, a form of gnosticism, which would make it hard to reconcile with Roman Catholicism and other denominations that regard gnosticism as a heresy