Action/In

The syntax fo Action/In:

An example of Action/In. The sentence is:

"Marc talks in the classroom."

I thought this was an interesting case frame. Consider these sentences:

"Marc talks in the class room."

"Marc talks near the chalk board."

"Marc talks at the podium."

"Marc talks on the moon."

...

Each sentence has a different prepositional phrase. These would seem to indicate that there exists case frames of the types:

Action/Near

Action/At

Action/On

...

Question: Could Object1/Rel/Object2 be a possible case frame or would it be a misuse?

The proposition is now:

"Marc talks (Object1) in (Rel) the class room (Object2).

This would appear to cut down on the number of case frames needed and also place the preposition in a node.