[How do you know if a sim is owned? I was booted out of one for no apparent reason.]

How do you know if a Sim is owned?

I was booted out of one on Cafe Lounge for no apparent reason.

I did not see any signs or indications that the treehouse I was in was owned by anyone!!!

I had logged out and after a couple of hours when I logged back in I was told by "someone" or "something"

that I had 15 seconds to leave or I would be ejected. 

Then I was unceremoniously kicked to the curb and yellow bars appeared around the area.

I am fairly new to Second Life Procedures.  Please let me know what to look for so I don't encounter this

same kind of episode in the future.

Thanks in advance for your help...