Are you really complaining that ", from the British Museum." leads to it a painting in the actual British Museum? Just remove the sentence, and you'll be fine. Now good luck trying to make Midjourney place the image at the museum!
I'm a paying MJ user and am impressed by Nano Banana. They're different models. They each serve their purpose.
This analysis is just noise. Yawn.
Ironically, even an LLM with its fake reasoning capabilities can point out the issue with the prompts if you ask it to critique this article.