Now, a friend over the internet wanted me to explain the passive voice to him. He began by providing his story's "readability statistics" of Microsoft Word, which said that 7% of his sentences were passive. Luckily, this story was at my disposal, so I investigated whether the statistic was correct or not. Then I came to this sentence:
There was something placed on the table...
First off, existential sentences are "newish" to me, but I believe that to be one. I also believe it's passive, but I'm unsure. I made several google searches, with only one outside of google books (the book was probably too advanced for me) talking about it. Now the reason that I think that is passive is the same reason why the person made that post (but in reverse). When turned into a nonexistential sentence it is passive (EDIT: I've been notified that the nonexistential sentence doesn't correspond to was placed but rather had been placed):
Something had been placed on the table [by X]...
Although, another reading could be that it isn't passive. Placed on the table may be seen as a (past) participial phrase modifying something. This interpretation seems untenable to me.
So am I right to think that this is a passive existential sentence?