Imagine you are a screenwriter, and you are writing a fiction script, reimagining events in the past (e.g. Inglorious Bastards).. I wonder what this product wo

Imagine you are a screenwriter, and you are writing a fiction script, reimagining events in the past (e.g. Inglorious Bastards).. I wonder what this product would answer when asked how the WW2 ended. How would this source-grounding mechanism work? Would it answer based on the truth/facts or on the source provided by the author?