There's not a way to do that at this time. The activity title parsing is independent from the activity name parsing. The titles aren't aware the names are plural so there's not a way for it to condition like that. In the future I hope to redesign it to be just 1 full language key per scenario to solve issues with different language structures. So in the future you might have something like the below.
[name_1] and [name_2] commented on photo [title] in album [album]
That would be the entire language string, which CB Gallery would then be aware of CB GroupJive activity and in groups would be the following.
[name_1] and [name_2] commented on photo [title] in album [album] in [group]
This too would be the entire language string. This would mean regardless of language you've full control of the full string. I don't really have a timeframe for this though as A LOT of rewriting in core CB needs to happen first before I can then start rewriting this, but I am aware of the problem at least and do have plans to address this.