Help me better understand Intellectual Property Refusal for AI content

Greetings everyone!

I generated some simple images of interiors using AI and just a few of them got rejected due to Intellectual Property Refusal. Trying to understand what is the issue to not get more of those refusals, please give me your opinion.

I attached a compressed image of the rejected submission. As you can see there are simply 3 posters and a chair. The only thing I suspect is that the chair has a copyrighted design or something like that. The title is "Contemporary Interior with Three Empty Poster Mock-ups and a Modern Chair", I don't think I could use anything IP related in the tags and the prompt I used to generate the image is just a simple description of the interior and lighting without referencing any artists, styles or companies.

Thank you!