In this task, you are given a public comment from online platforms. You are expected to classify the comment into two classes: obscene and non-obscene. A comment is obscene if it is considered offensive to the public sense of decency, for example because it too obviously relates to sex or contains language regarded as taboo in polite usage.
Example: Comment: Damn! Another cloudy day, and it's all Obama's doing!
Example solution: Obscene
Example explanation: This is obscenity because it hints on sexual content that is offensive to the public sense of decency.

Problem: Comment: Yes, if the Catholic Church were not so darned ... Catholic ... we could join the LDS and the Anglicans in changing dogma on the fly.

Some minor notes ... the "committee discussing birth control" was not granted any authority to approve or disapprove anything. It was supposed to be giving the Holy Father some pros and cons to consider. And its report was not for public consumption, but was "leaked".

When we talk about "chance", we mean if something is certain the probability is "1", and if absolutely positively cannot occur the probability is "0".

When you write "During Vatican II the chance existed to change this ..." we're looking at 0.
Solution: Obscene