If you have a printed copy of the story, you might have publishing and copyright information right there. It would be a starting point. Check with the publisher. If you want to write original stories about mythical characters, I don't think anything prohibits you from doing that. Searching for this kind of thing can be a nightmare. If you are working on a serious project, consider getting a professional to help you do a competent search.
Nowhere, since the Paranormal Activity movies are entirely fictional. There is no "true story" behind them.
It depends on the extent of the reference and the portrayal of the product, slogan, character, or story. Negatively portraying a product, for example, may cause the trademark holder to take action.
No , "G.I. Jane" is a fictional story .
no it is fictional.
Rose herself was fictional my dear. Jack and Rose were both made up.
Yes, the lightsaber is a copyrighted fictional weapon featured in the Star Wars franchise created by George Lucas.
Find it in your heart. It is waiting there>
Yes. A very fictional story.
Yes it is a fictional story.
Nowhere, since the Paranormal Activity movies are entirely fictional. There is no "true story" behind them.
No, creative writing does not have to be fictional.
A fictional novel is a lengthy story.
yes it does have to be fictional
If they are copyrighted, then yes.
No. A historical story is a fictional story with facts about whatever your story is about.
It is a fictional story.
No. It is a fictional story, though realistic