Original sentence: " X-Files continuity allows for the existence of parallel worlds.It is debated among fans of the character as to whether the appearance on the science fiction X-Files series is part of the character's regular continuity (which would place Law & Order, Homicide, and the other series in a world facing alien invasion), or in an "alternate universe
Edited sentence: " Since X-Files continuity allows for the existence of parallel worlds, the latter explanation is most likely.It is debated among fans of the character as to whether the appearance on the science fiction X-Files series is part of the character's regular continuity (which would place Law & Order, Homicide and the other series in a world facing alien invasion), or in an "alternate universe